Battery life is going to be a very serious limiting factor. It's one thing to walk all day in a new city you are visiting, and think only about recharging yours

Battery life is going to be a very serious limiting factor. It's one thing to walk all day in a new city you are visiting, and think only about recharging yourself. But walking an hour in these, and then carry them (and they should be heavy, relatively speaking) until next charge - I think it would not be worth it.