I've tried various other "slightly longer" grips on my J-frames, and the slight extra length does indeed cause problems for ME, on MY guns, in MY clothes. Someone else might be very different.
Anyway, can someone tell us how the Tamers attach to the gun? Is there an easy way to attach them if the bottom of the grip is cut off, level with the bottom of the grip frame?
The Tamers work something like the Bantam grips, but after they are slid into position, the bottom cap is spread slightly with an (empty) .38 case and then snaps in place to hold the entire grip securely.
The .38 case method worked poorly for me, the empty case kept being strongly pushed out of the bottom cap before it was in position. I finally used a large screwdriver to spread the bottom cap in the little slot at the bottom. That slightly distorted the inside of the cap (barely visible) but otherwise worked well.
It looked to me like one could cut off the bottom of the grip and about half of the bottom cap together, carefully, with the grips installed on the gun. That would make the bottom of the grip only about 1/8" longer than the bottom of the frame. I plan to try that when I have time.
The bigger issue for me, when I test fired it last night, was that the increase in hand comfort (especially in the web of my hand) and control, was rather modest. Despite most of the grip's surface being the same as the Bantam grips, the gun tended to twist and climb in my hand at least as much as with the Bantams, maybe even a bit more. I have medium size hands (wear a medium or large glove), and can really engulf the Bantams and squeeze 'em tight. The Tamers seemed a little to large for me, and I shoot Glocks without finding them to be too large. I tested the guns using everything from powder-puff wimp loads to +P, using identical 340PD's, one with the Tamers and one with the factory Bantams.
I'll post further when I learn more, which might be tomorrow or not until summer...