Why they won't catch on?
two words: not garter friendly
If you aren't on the meatrack and toss one up on stage when she zigs instead of zags?
-bang- somebody's got a chipped tooth.
Spike heel comes down on top of one during a pivot? Acrylic stage, oil, little metal disk? That's a recipe for a twisted ankle or worse.
Won't someone think of the strippers?
I thought of the strippers once when I had a pocketful of those coins. I gave them as tips
Course the girl knew me in real life and took it for the joke that it was.... considering she worked at a bank during the day.