I have a Catquiver IV that I like quite a bit. I also took a Summit Equipment leg pack (like a heavy pack belt with large pockets attached that strap to your legs) and mated it with the CQ. The end result is a lot of carrying capacity, and versatility in the field.
I almost put the whole thing up for sale last week to raise some money, but after taking pictures, realized it was too good to get rid of.
Once you get used to a CQ, they are really pretty easy. My biggest problem with Catquivers is that they are harder to work with when you have full-length arrows.