Yeah, this device is NOT for the grip (per my experience), it's to protect your hand from a "stinger". I don't know anyone that wears it for helping their grip, etc. But, hey if they want to add it to their promo, that's cool.
If you don't hit the ball on the sweet spot of the bat, you can get a stinger that hurts like a b1tch. Hitting it on the handle or the very edge of the bat produces the "sting". The colder it is out, the more it stings.
I usually only wore one when it was 60 degrees out or colder outside. Lots of folks wear them that use wood bats. You'll see some major leagues that don't wear them, and you can tell on the cold days when they are shaking their hands after a hit when they get to 1B. Ever work outside bare handed in the winter and then hit your hands on something hard. It's like that but 10 time worse
It would have zero application to billiards, unless you are breaking 9ball, outside, in Canada, during winter
