Had them on a cherry OG Colt 1917 .45 my father had that I donated to the USMC museum in Quantico back a decade or two, only way to shoot the thing accurately double action. Good kit.
I have some 38s with Tyler’s and they work great. I don’t like them on guns used to shoot magnum rounds or other hard recoiling ammo. Need to fill the hand more on those to dissipate the recoil.