I thought about it, but from what I'm reading, "obligate SPS feeder." Unfortunately that "obligate" part makes it a tough candidate. If it eats nothing else, ...... I question if I could keep it alive long-term. I'm not sure I could grow SPS fast enough to feed the fish (although the idea certainly is tempting, I wonder if you could feed them M. digitata trimmings that nobody seems to want anymore)..
But I bet you'd need a very large and very fast growing supply.
I was kind of hoping by "polyp muncher" it meant I had found someone who could trim my burgeoning mushrooms and button polyps. Oh well.