A rack of $100s with maybe 1:20 fakes with identical colors would add up, and I doubt that amy non-chipper would notice. Hell, dealers didn't notice poorly spray-painted chips in repeated incidents.
I hate to be the rain on the parade, and I can only hope I'm wrong. But I've learned a long time ago to make my dreams come true when they can, and forget the dreams that can't.
Like Shaggy, I've had the cage call the pit, but they are only getting approximate amounts. Still be a cakewalk to slide in $500 in counterfeits, or wash them through the craps table.