The battery life isn't "long" its at most a few days, looks about what the android wear watches have. Leaching off the pocket viewer battery is a good idea but doesn't add that much to the total package.
Its a hard plastic shell almost completely around your wrist, technically you are using words that make a point but practically you completely missed my point.
As long as it's comfortable, why is it important for it to be soft? And how long is "long"? And you can always carry more chargers around with you. If you only need a few days of battery life there's no point weighing yourself down with more.
I think hammerandtongs is saying if you go to type and one of your wrists is a couple of centimeters higher than the other, that's not very comfortable.