Used the kuiu for a while. Really like the sleek design and ease of bino access. It's a great product and possibly the most comfortable I've used. Downside for me was the pouch/straps was attached to the bino. I like to throw the binos on a tripod whenever possible. And that function wasn't very doable with the kuiu. I've been using Fhf for some time now and really like it. It seems damn near fireproof. I like being able to leave the tripod adapter on the binos, whip em out and attach them to the tripod. The small pockets on the Fhf hold a havalon,tags,cleaning cloth and quick detach adapter for my tripod head. Downside of the Fhf is the noise while sliding the binos in and out. It's almost a thick silnylon material lining the inside and is a bit noisy. There both pretty easy to slip on and off the body once you get a routine down. And both are pretty easy to size when you start adding layers. I think I recall the kuiu being a bit more work to adjust. I think there were some (not sure if the verbage is correct) 3 bar type sliders that needed adjustment on the kuiu. I could be wrong though.