Here is my opinion, no Huma's are not reef safe....but they are now AS distructive. I am not taking anything away from reef tanks, because once I gain more experience I'd like to have a reef tank, but my Huma Huma is the single most entertaining fish I have ever had. He is so much fun to watch, he comes to the glass whenever I walk in the room, he spits water out of the tank when feeding, and even though right now he is being a trouble maker, he is the coolest fish around IMO.
Today I switched from CC to sand, and right when the water really cleared up, he started landscaping the sand bed, now I can't see from on end of the tank to the other. He is digging a hole all the way down to the glass bottom of the tank. Once you have a Huma Huma you won't want anything else, They're cool!