I bought 2 sets to increase the grip of the Pro Controller joysticks. My thumb slipped off while doing exercises in Smash Bros. Ultimate. Contrary to other reviews, I have not had any issues with the grips slipping off the poles after following the instructions and making sure they are fitted correctly. I only had 1 problem which is relatively minor. The difference between the skin and CQC versions of the handles isn't displayed properly (it's there, it's just hard to notice right away). The CQC grip has an embossed surface that forms a circle around the center of the grip. The leather handle does not have this embossed surface. Luckily I was able to apply what I wanted to the right controllers. The only grip slippage I've seen is a little bit of rotation, but that's not a problem. I haven't tried the fps versions yet. There aren't many FPS games I want to play on Switch, so maybe later.