I am an amerature magician that does it for fun. I am actively looking for "cool tricks" to consider getting, and was looking at the Raven. Seems like an older trick, but looks pretty cool. So the newer version that is sold now, doesn't have a "brake"? I have no idea what the brake consists of or exactly what it does, but I'd assume it stops the coin.
Good Luck, but obviously, if it is getting caught in your sleeve, 80% of the time, you need to have a Larger Opening at your sleeve. Get a shirt that has this.