I love happy endings.
If you haven't already, look into Ahrends stocks. To me, they feel almost as good as issue magnas with a Tyler T-Grip, but are thinner and hide better in a pocket. Plenty of s/l clearance; I too use Comp 1s and HKS when I do speedloaders on a J frame. I carry Speed Strips, though, so that's what I usually practice with.
.