I have used a CAT II with my compound for a few years now, and I'm sort of mixed. I have been hunting out west for as long as I have owned my CAT II, so that means a lot of sitting and glassing; plus a lot of kneeling, crawling, and climbing. With the older Gen. of CAT quivers it can be tricky since the quiver protrudes so far past your lower back. Sitting is impossible while wearing the pack, and kneeling can be tough too. The newer Gen. with the quiver on one side and the arrows starting at hip level and going up is a much better design. It is nice to have everything in one package though. As of last season I just started using a Bohning 3 arrow quiver with a single lever to lock and unlock the quiver on my Bow Tech, and on my recurve a three arrow strap on quiver. That way I can carry a small hydration compatible day pack, as opposed to just shoving a hydration bladder into my CAT quiver, and still carry a few necessities.