The rest of the guys have pretty much described my experience with the GunBearer. It takes some getting used to and the setup takes a bit to perfect (especially when swapping it from different packs) but its the best thing I have used. I have used it for two years and 3 sheep hunts and wont go without it. I did wipe out last year and broke the upper strap and had Kifaru send me 2 new ones so I have an extra. When hunting with a pack and climbing tough terrain its simply a must having a place out of your hands to stow your rifle, but as in my case where I have bumped into grizzlies in tight quarters more than once sheep hunting I like having it right there should I need it. Plus I use 2 trakking poles in the bad stuff and I dont have to worry about my rifle with the Gun Bearer. FWIW my sheep hunting partner used the Gun Slinger version last year and it looked to work well also.