if your keeping a pair with characins and bottom feeders and. no other cichlids then that will be fine. As i have said mine are trouble causers only with cichlids of similar size accept when they have laid eggs then they are typical cichlids chading everything but they are all bark and no bite but if my rotkeil severum or nicaraguan decide to lip lock with one of the elliotis i can see the elliotis getting hurt, i believe they have weak jaws.
to be honest i dont even think i will get bottom feeders. i would like to give my cichlids the run of the tank and have a nice group of wild sword tails or other live bearers to keep the top of the tank acive