I've been using a well broken-in, Howard Hill Archery back quiver, for many years, for both target and hunting. Everyone is different, but in timed competition, I am faster with a back quiver than with any other type. (That includes a recurve as well as a longbow.)
That said, after moving to the desert, I realized that my water requirements are much greater, and I need to carry a pack. So, after much gnashing of teeth, I am going back to a bow quiver on a recurve--and maybe an arrow tube lashed to my Alice pack, to carry extra arrows, when I'm after small game.
For bunny rabbits--and some 3D shoots--five arrows just ain't enough!!
Be well and good luck.