I have had a couple of LMB and they were nothing but trouble,aggressive to other fish and nipped at LPS and SPS.
I have avoided all blennies since until recently when i picked up a tailspot blenny who has been a model citizen so far.
They have the same interesting character as the other blennies but as mentioned stay smaller and don't seem to have the aggression issues.
Where did you find a tailspot?? I would ask at stores and they would look at me funny.. only saw it on liveaquaria, same thing with halloween hermits too tho..