DNA, occasionally I get people who wrinkle their noses and ask for "real" money. The rest are split pretty much evenly between charmed fascination, "What's this?" and then acceptance upon explanation, and tucking the coins neatly away without a second glance (these aren't all regulars, either--there are apparently folks out here who just know and accept the coins as well as the bills).
. . . oh. Also a small but significant set of older folks who remember the last days of readily-circulating
Peace dollars and silver certs, who are actually outright happy to get these coins because it reminds them of "the good old days."