The coin roll is a great flourish to be able to do. I very very often do this outside of my magic
routine and I've found that it is certainly an attention grabber. Like other flourishes, it's only a
flourish and nothing more. If you do a lot of coin magic however, this would make your routine all
the more better. I've never come across a person who's told me, "That's not that great." If you
don't already know how to do this, I recommend learning it. You'll be glad you did.