I need to work during the day (mostly typing on a computer)

and want to vape, but I have to have one hand on my battery in order to vape...
Is there a 'hands free' vape that is as good as a eGo spin and a clearomizer?
There will be negatives and positives to each thing I will go over. Your case will be a little easier but this is all do able and you don't have to give up quality of vape to your eGo spin.
I currently carry two hands free devices at one time, each has different strengths and weaknesses. I am going to guess you will be able to get along fine with just one.
Your spin is VV, it will work a little easier if you can give up VV but you will not have to give up vape quality. I am going to start with the smallest and move up.
I don't know how many amps all of the various VV eGo types can handle but 2.5 amps is often quoted, there is one I am aware of that is higher but that is beyond the scope of this topic.
If another device can handle a 2.5 amp load in theory we can mimic the performance and a variable device by using different ohms by hitting the same watts. This does not translate perfectly into the real world but it can work. Not knowing what voltage and how many ohms you use on your eGo I don't know how close you are coming to it's amp limit but the further you are from it the easier it is to mimic.
I think there is a 14mm device that is perfect for you but I am making assumptions and could be wrong.
On the smallest devices the quality of the battery makes a large difference. The devices that have batteries that are shorter than 65mm and narrower than 9.2mm of course will not have as many mAh but it also affect quality of the vape. The smaller the battery the higher the C-rating has to be in order to carry the same amount of amp. If they are being subjected to more current draw than then can handle you are damaging the battery and there might be the potential for some risk.
In testing these batteries it seems the performance is not going up as much and one would expect and the ohms are reduced. That leads me to think the batteries cannot carry the load and are sagging. All batteries sag under load but to varying degrees. From all the ones I have tried they don't have the C-rating to mimic the performance of your twist. I think they could make one but it will be a more expensive battery and run time will be shortened even more.
Another issue on the smallest device is the length of the mouth piece. Shorter batteries are easier but longer mouth pieces can sometimes make things easier. I qualify this as sometimes as there are other variables. When going hands free sometimes it is easier of you hold the mouthpiece deeper in your mouth and grip with with your molars. Many want a small device for stealth and only go hands free a few minutes at a time. Going hours hands free is doable but it is different than going stealth. Some of the tiny ones can create a burned lip because of lack of mouth piece length. The super mini's using a tanks has people suggesting you up the nic levels and flavor because they will be muted. That can be avoided by avoiding the tanks systems. Another problem with the tank systems is they seem to be to need a gentle environment to work.
Going up to the slightly larger devices of the common cigalike. Only a minority of these items can give you a vape close to your eGo but it can be the same or very close.
Here is why most of them do not work out. Why the Joye 510 fails is it is regulated around 3.4v. The difference is apparent. You can go with low ohm cartomizers but the deficit is too much to pick up. There are regulated and unregulated 510's and they have their positives and negatives. There are 510's that are regulated at 3.6 or 3.7v even though there are people that will tell you they don't exist they do exist. The ones that I have tried can benefit from going low ohms but you for many of them you can get into dangerous territory before they match your eGo. Even though you might have an eGo at 3.7v (not all ego's are at 3.7, some are at 3.4) and a 510 cigalike unless that 510 has a much higher C-rating it cannot compete. If there was a high drain 510 it could do better. Unregulated 510's that I have tried are a little better fresh off the charger but fade quickly.
The 510 regulated and unregulated that I have found cannot compete with your eGo but can close the gap with low ohm devices but going to low can be damaging to the battery. If there was a high drain 510 it can close the gap but I have not found a 510 yet with a high drain battery. Also an auto 510 can be damaged by juice leaks. I have not found a good solution in a 510 cigalike but in KR808 I have managed to do much better.
The KR808 in a hands free device has some advantages. The sealed ones are more resistant to juice leakages. Not all KR808's are the same. They come in regulated and un-regulated and I know of one high drain and there is also one I have not yet tested that looks interesting.
Most of the regulated and unregulated ones fall a bit short to me to mimic an eGo. The problem is they cannot carry the load even though the voltage is 3.7. The regulated ones I have looked at cannot carry the amps, the unregulated ones are a little better coming out of the gate but fade rather quickly. The problem is they are not high drain batteries. An eGo can handle 2.5amps and there is a cigalike battery that can do the same. In theory with the right ohms it should be able to mimic an eGo that is rated at 2.5 amps. The VL4 Diamond, and Stealth come closer to matching what an eGo than anything I have seen in a cigalike.
The cigalikes fall short in runtime and juice capacity but the best I have tried is not horribly far behind in performance. I recommend if you use a cigalike for hand free you experiment with different cartomizers. I like the 45mm ones more than the 35mm ones as it gives more to bite on. Again I have only found one that I think gives a satisfying amount of vapor, throat hit, and flavor and comes close to eGo performance.
The 14mm hands free devices. There are several to choose from but all have some short comings. The various VV auto eGo types that I have found are long, they tend to carry too much weight far out from your mouth. The non-VV eGos can be found it 3.4v which is not that great but can be compensated for with lower ohms, the 3.7v ones, which are ok but my choice in the 14mm 510's are the ones made differently for Ikenvape. instead of a nominal voltage of 3.7v they have a nominal voltage of 3.96 and you can tell the moment you use them.
Picking the clearomizer carefully for this is important on these. You want one that is comfortable for you to bite down on. I will get more into this a bit later. The Ikenvape versions are my pick for 510 because of the 3.96 nominal voltage. they perform great. There was two problems for me. If I am setting still I can hold one in my mouth comfortably for hour, if I am doing something active everything changes. the mass has momentum and when I come to a sudden stop the device wants to keep moving. The 350 mAh hour is the easiest when active. The other negative is I have had a few juice spills and have to take the time to clean up the auto switch, I have damaged one of mine with juice leaks and need to see if I can revive. it.
There is only one longer one I can recommend and only because of its delivery system. The DAV with a Smileomizer works as long as I am not being physically active. The only reason it works is the Smileomizer gives a good gripping surface for your teeth in such away to make it feel lighter.
If I was doing nothing but paper work I can keep one of these in my teeth for an hour at a time easily, they are just too long and have too much momentum when I am doing physical work.
I am going to make another set of posts and try and present these better.