Yes that could work but I’ve tried that with a holster and the retention became loose and the handgun moved around in the holster( from the light pushing out against the cut part when moved). While that’s not a big issue because my gun is always stationary on my side, I’d much rather get a holster that fully encloses the front of the firearm and needs no modification.Could you just buy an IWB holster for the 17/22 and cut the muzzle end enough to let the pistol through?
Contact Will at SCK holsters. Do a search for Silk Custom Kydex, he is also on facebook. He lives in Walker and makes excellent holsters I have 6 of them.