Another name they go by is Black Combtooth Blenny.
I have a Tribal Blenny and I would say he is a bit grumpy. Sometimes he chomps on my kenya tree, but doesn't eat it, just almost tasting it or taking anger out on it. I only have one SPS frag which is no where near him so I cannot say anything about SPS compatibility. He leaves all the LPS alone though (except to sometimes steal food).