Yeah, I'm going to have to spring for them. I've read a lot of good things about the LOK Veloce "Palm swell" grips being significantly larger. I have to force myself to get a proper grip now. OK maybe not force, but think about it. My Mete SFT Pro with the large backstrap fits me a lot better-and is a lot less slippery. Texture on the front of the grip frame is pretty "mild" too.I don’t have a Rival S, but I get the “gorilla hands” problem lol. On other pistols, I usually end up wanting thicker panels more than anything.