The 2.0 as well as the 1.0 versions of the MVP both feature the option for charging other devices. THe main beef with the 1.0 was the stem for the usb port's on/off switch stuck out where you couldn't that one upright. The 2.0 saw the switch shortened in length. The MVP 20W has it as well as will the 3.0!
The cord being built in not a separate item as you have to supply the charging cord for some other device allows it to be used as a passthrough device while being charged.
You didn't see that with the 2.0 and hasn't worked on the 20W so far while the VV V3 and V4 batteries offer that option. Once these start arriving at regular vendors or if you run into one presently seeing a pre-order offer going the information will likely indicate the mah it will have to work with. I suspect since the new V4 battery raised up from 11w max to 15w like the eGo-V V4 batteries seeing the 300mah boost will be seeing another boost for the 3.0 as well to match the increase in wattage which is a leap from the 1.0, 2.0 versions.
The 3800mah was mentioned earlier on the thread by someone as I recall which brought back memories for the Groove II I went with since the 2.0 only offered 6-11w while that had offered a 3-15w range.
While the quality sadly suffered greatly the Smok unit offered the main button on top and curved sides while the MVP is squared sided. The main complaint a year ago October into November 2013 besides the switch sticking out too far on the 1.0 was where the button was located as well as the shoulder around that some were complaining about. I suspect the 3.0 however will be built like a rock like the previous versions were.
Then, somewhere down the road, I got the eGos and then even larger tube mods and I thought that I loved them--till I got my first MVP; I discovered that I really liked box mods. I don't even use my tube mods anymore... I think that those small DNA boxes may just be the future of vaping. But who knows? There's no telling what we'll be using a year from now. 
