"I have never heard of anyone being caught trying to switch denominations"....

There was just someone busted in Tunica at a certain casino that shall remain un-named about 2 weeks ago. In my short 9 years in the gaming business I would guess I've seen 10 people arrested for denomination related offences. If your going to cheat the casino there are far less risky and far more lucrative ways to do it. NONE of them are worth the time in prison making friends with Bubba. Learning how to count down a single or double deck game isn't cheating and all they can do is tell you not to play.