Well, the lock back issue wasn't really an issue at all. I just relaxed my left thumb today instead of shooting it straight out, and it stays away from the slide stop now. The gun shoots great.

Shown here are various DA to SA controlled pairs. Targets were stapled to a pair of E-types at 7 and 8 yards. The smaller holes are from my Colt Vest Pocket, which got some action today as the BUG. I plan to cook up some loads to try next range trip at 25 yards for groups.