OK OK I know it's not rubber but I bought a 5 yard roll of 3M Outdoor Tread (skateboard tape). I kept the backing off of my last decal grip set and use it as a template to cut out additional sets as the others get worn. It doesn't come off until I peel it off, leaves no residue and doesn't add any discernible thickness to the grip. I use it on all of my Glocks that I compete with. To me it is only mildly abrasive to my hand and I have never had my gun to slip in my hand no matter how sweaty. Its a good bit more comfortable to my hand than my brother's SW MP 2.0