The weird thing about the ones at the Cal is that they upgraded from the Fortune I machines (which had the ability to hold credits, but was turned off to make them coin-in, coin-out on every hand), and upgraded them to Player's Edge Plus (PE+) machines, which absolutely can hold credits (there are still a fair number of PE+ machines in the downtown casinos that operate in credit mode), but they still have them set to non-credit so coins come out on every win. They seem to be really popular with the Hawaiian tourists, though.