Mine have been fine, I added a small black leopard after adding a pair of potters but the black jumped after a couple weeks (I never had a problem and was actually making the screen tops the night I found the dried out body). My bartletts anthias male was harrassing her tho which I believe led to her jumping..... I am adding a regular leopard tonight or this weekend depending on when my friend can catch it and I don't anticipate any problems. I also plan on adding several other leopards eventually (bipartitus, black, maybe ornate.... the 1st 2 will be pairs or trios if I can get them at the same time, and probably a couple more of the regular leopards if I can get 2 together that are decent size).
FWIW, the potters pair actually took the little black leopard in and would let it swim with them quite a bit as well. I will let you know how adding the regular leopard in goes too.