no experiance with camelbacks but the cleaner definatly is a go. I may be wrong, but i believe the only shrimp(besides mantis shrimp) that have compatability issues are banded shrimp and then it's just with their own kind. i have 6 pepermint, one cleaner and one banded in a 55 and everyone is happy.
In my 75g, a coral-banded, a skunk cleaner and a peppermint. I added them in that order. I've never seen them have issues. But if the coral-banded and skunk both seem to want the same piece of food, then the skunk backs off and looks for the next one. The peppermint only comes out at night.
About a year ago I got two camelbacks as hitch-hikers inside some live rock. (live rock came from the shipper dry after sitting in an airport for two days because of a snow storm, no kidding)
I had a coral banded, two peppermints, two cleaners and one fire shrimp. They all got along famously until dinner time. The fire shrimp was bold, as well as the peppermint. The camel backs would hide until everyone else had eaten. The cleaner shrimp would chase down the camelbacks and run them off. All in all, everyone got along though. Camelbacks are awesome. I think they are prettier than any of the others (save the coral banded). I wish I had two more.
