the two items certainly bear a certain resemblance to each other, but like backpacks they're bulky, (to a lesser extent certainly) and would get in the way of my normal activity. they work for some, maybe many, but i'd like to find a 'shoulder holster' kind of thing, where the n770/800 would be out of view and out the way but quickly and easily accessible. neither the 770 or 800 is small and/or light enough to hang comfortably on a belt.