Back when my old dept carried Glock 21's, we sent them all to Robar (now sadly gone) and had the grips textured and the finger grooves removed. I never had an issue with the finger grooves myself. I still have my 21 that was my armory gun, an officers turn in. I don't recollect that I've ever shot it, probably should do that I reckon. I tried my own treatment on a couple officers personal Glocks and used truck bed liner. Found one that was kind of rubbery. They actually liked my texture better than Robars, although Robars was quite nice. I think I still have a small can of that stuff, I should see if it's still any good. It was just a small sample can the company sent me.
I too didn't care for my 36 near as much as the 30. I liked the single stack and the slimness but just didn't shoot it as well. Never could figure that out.
In Memory of Paul "Dietrich" Stines.
Dad: Say something nice to your cousin Shirley
Dietrich: For a fat girl you sure don't sweat much.
Cue sound of Head slap.
RIP Muggsy & TMan
"If you are a warrior legally authorized to carry a weapon and you step outside without that weapon, then you become a sheep, pretending that JOCKO will not come today."