I've used 4, 3, and 2 blade b'heads with the soft leather "Hill style" back quivers I've built, with no real issues for withdrawing the shaft from the quiver. I used a 2" foam insert in the quiver bottom to keep the heads from moving around and getting dull. Hill used rolled oats or similar for the same function. No matter what head used, or the stiffness of the quiver, it's gonna touch the quiver innards on removal, specially if done reasonably fast.
Back quivers yell "trad archery/bowhunting!", and they're great ways to pack a lotta shafts out hunting, but truthfully they're not as functional as other kinds of quivers, such as one on the bow, or a "stealth" side quiver. I find using both takes care of my issues and needs.