IMHO if you don't take the manual switch, you're kind of missing a major point of the KISS Box. The manual switch gives you the right temperature immediately and as you have been able to see from Dusty's video, it therefore doesn't require a 'pre' puff which will also give you longer battery life. As you will read from most people's comments on the KISS Box, they much prefer the manual switch over the automatic because it gives better vapour as well.
From what I've read, and judging by my own experiences with the KISS Box Classic, battery life is generally better than other similar type e-cigarettes and because you have the option of using the USB when behind the computer or driving, that too will preserve the (separate) batteries which will thus prolong their life.
By the way, I do understand your desire to have a device that looks as much like a regular cigarette as possible as I was much the same when I started e-smoking, but after 8 months of vaping, I've found I actually prefer a device that looks as little as a regular cigarette as possible (so that no-one can mistake what I'm using for a regular cigarette) and (more importantly !) gives me the best possible vape. In my experience a (good quality) penstyle e-cigarette fits the bill perfectly. You know the old adage 'don't knock 'em till you try 'em'

? You might just be hugely and pleasantly surprised by their performance ! Just my two cents' worth...
Sorry, can't help you with Jane's penstyle as I have no experience of/with it...
Cheers,
Silver