I have had all my snakes on paper for the last 6 months and enjoy it for the worry free feeding (especially with my girls that require me to leave the f/t rodent in over night.) I'm considering moving a couple stubborn eaters back onto cypress and feeding directly on it. If their appetite improves, it might be worth the risk to make it permanent for just them.

Thanks for the input everyone. I would have guessed the results would have been opposite, but it seems like I might be worrying too much about it.