I have one in my 60 gallon, Bi-color that is. Of course, I only have 2 species of 'Shrooms in there at present, so I cannot vouch for his behavior with hard coral. I had algae issues with my former hard corals, the C. bicolor didn't bother them though.
But I wouldn't EVER trust one in a tank with MEATY LPS corals. Or even expensive SPS corals. This species & the Lemonpeel are just pretty bad for tearing up corals.
Matthew