On our AK trip last summer, three in our group used them. After the second day, two were swearing up a storm over how they were being gouged in the hip by it among other comments. Those two had not tried it out before our trip to fit it. Ask Fridge, Dub or ChinMusic over on TheBackpacker. Fridge may have been the only one at least a little satisfied with it. Kinda fiddly thing too.