Okay, I think I have heard about the rubber thingy getting slippery, that's my biggest problem with it. Think my hand is around 19.5-20cm, so seems quite okay for me. Also I feel like my grip is rather loose palm, feels really weird atm tbh. I really don't feel comfy with a palm grip and it turns into claw a bit more, but not really claw as well, rather in the middle ground. Sounds a bit weird, but that's how it is.