I also have one of Steve Catt's back quivers which I like a lot. If you get it custom made, make sure it is the right size for your arrows. Personally, I like the quiver to touch or just go a little past the beginning of the fletching. I used the total arrow length less 5 inches formula and it worked great for me. If you don't want the arrow to rattle, then make sure the quiver is soft enough to conform to your back.

I also use a Cat Quiver for hunting. I especially like the protection it gives the fletching.