We agonize over minutae at length, sometimes. Those boot grips might work OK in my hands with a small/light snubgun, but after close to 800 rounds through the Glock 29 I believe I have found my Little Gun. Most of the commercial 180 grain loads that claim 1140 FPS from 5" barrels give about 1050 FPS from the G29. Comparitively, my old shop's carry load in 40 S&W (WWB 180 JHPs) give about 950 from a Glock 22--910 from the Glock 23--and about 860 FPS from the G27 sub-compact. I like getting 190 FPS more from each shot, with only slight weight and dimensional upticks. The Pearce magazine baseplates are a BIG help holding on to that little monster in recoil, too.
My 2-gun rig would be the Glock 20 and 29. Spare mags for the 20 fit the 29. I do like the 10mm, very much.