Yeah, it happens all the time. Mine usually just mouths the tentacles, but on occasion, she'll actually take a chomp. I've heard quite a few others with the same experiences. Maroons can be pretty rough on their anemone's, though, so if yours isn't significantly bigger than your clown (at least 2x I think is what I've heard), keep an eye on it. Maroons have been known to abuse their host anemones to death. . .or so I've been told.