I was carrying multiple ego twists with me along with all the accessories. Got tired of that so I bought an MVP2 that now lasts me about 2 to 3 days of vaping. I use a Nautilus 5ml tank as I can't vape that much before returning home again so I don't need to carry extra battereies anymore and I don't need to carry extra juice bottles or tanks anymore.
Of course if it's mid day and I decide that the juice that is in my nautilus is not what I want to vape at that moment, I'm just SOL until I return home again. Gotta say though, I'm much happier having to only carry around the MVP2 with attached Nautilus tank than I was carrying around multiple ego twist batteries and disposable clearomizers in my pockets or backpack. On days that I know are going to be "easier" on me, then I might carry my Aerotank mega instead of the Nautilus and find that even it (although I don't recall how much it holds, maybe only 4ml) holds enough juice to get me from when I leave home in the AM and return in the PM.
When I first started to vape, I used to carry a couple different tanks, bottles of eliquids, and batteries in the vinyl case they gave me when I had my cataract surgery as it's a large zippered pouch that I could fit maybe 5 ego twists, about 4 to 5 bottles and an assortment of filled and empty disposable clearomizers. Then I consolidated down to the ego's that fit in the pocket and finally down to the MVP2 with just one large tank. It was convenient at first to carry the case from my cataract surgery as I'd also had major dental surgery before my eyes and so I was still carrying around extra things like fixodent etc out of fear that my teeth might fall out of my face one day and I'd be without. Hahaha, found out that's actually physically impossible, much to my relief.
Now that this topic has come to my attention, I think I'm going to just throw and extra coil for whatever tank I might have on my MVP2 as I'd hate to be the 150 miles away from home and have to drive home dry if my coil goes out on me. I'm still at the stage where I'd likely stop to pick up a pack of cigarettes at a convenience store if my vaping device up and quit on me, so I'd better start carrying an extra coil just in case.