I would already have bought the wtf gauntlets if it could be flipped around and worn on the inside of the arm.
I used to try these shotgun shell holders that strap to your forearm, but they held the tubes vertically. So even if worn on the inside the tops and bottoms took hits.
I have been really enjoying the 6x capless patches from wtf, and got to try a McCann one which was nice too, on a belt at the 8 and 4 o'clock positions and really liked them. I take the belt off to reload.