There must be some real Nervious Nellies hanging around then, lol. I charge mine when I get in bed at night (as everyone I know does) and never have a battery concern. Some actually only charge it every other night. And as I mentioned, since it doubles as a pass-through/charger, I don't see how your point is valid. And there have been no battery failures to date from what I have read.
And it's no different that any other model that might have a problem that requires you to send it back as I read some did with both the Provari and Darwin. That's why everyone with any sense has a backup. And as I mentioned, when under warranty, Evolve overnighted me a knew one before I could get mine in the mail. Tell me another company that does that???
I must be a Nervious Nellie then, because that is one of the reasons why I am leaning towards the provari. Not so much a concern as it is a convenience issue. I simply want to be able to vape all the time, anytime. Having multiple batteries(without having to buy multiple decives) enables me to experience that.
It's the one thing I hate about all of the ecigs I have used, even the new 900mAh lcd vv battery I ordered(which I am still waiting for) still has that "having to charge the whole unit" issue, so if you have no backup your screwed. At least With that said battery(only 25 bucks) I can afford to order multiple batteries, so I can at least have backups. With the more expensive mods tthough, I simply cannot afford to have 2 darwin lying around. Yes I can use the 900mAh vv battery as a back up if I do end up purchasing the darwin, but I still would like that convenience of being able to smoke my top vv mod at all times. Provari allows that, I can afford the extra 4 batteries that come with it, enabling me to smoke the Provari anytime, al the time.
Thanks for all the comments people, I am still leaning towards the provari, but whne the time comes to purchase an expensive vv mod, I still have a big decision to make.