Just used this on a NM bear hunt, the comment that the bottle will slide is accurate but I found that to be a positive. I would slide it back right next to my pack and it would stay there until I needed it and in my experience it made no noise whatsoever. One handed operation could be tricky but it also weighs nothing and there is something to be said about that, I’m sure a beefier construction could aid in one handed use but it would undoubtedly add weight. I may not be picky but I feel like it was a solid purchase and would buy it again. 5 stars.