I have a scarlet skunk cleaner shrimp and a peppermint shrimp in the nano and they got along fine..
A couple of months ago I bought a cleaner shrimp for the 55. They only had smaller ones and I did not want to put a small shrimp in with the mantis so the new shrimp went into nano and I transfered the larger one to the 55g.
This new cleaner shrimp did not like the peppermint shrimp and would chase him around a lot. The peppermint to to living on the powerhead but could go explore when the cleaner was otherwise occupied.
Saturday night I caught the Cleaner shrimp brutally killing the peppermint. I had just fed the tank about 15 minutes before and all was fine and everybody ate. Then when I came back into the room the bloodbath had already begun. Hermits came a running as did a couple of nassarius snails. The next morning there was no sign of the carnage.
Sorry it was so gruelsome I did not think to grab the camera.