I wouldn't. I wouldn't even carry them at the fish shop I was running. They are very aggressive and many get pretty big, lose color, and end up as big, ugly, aggressive PITAs that you end up taking all the rock out of your tank just to get that one damsel back out. They are NOT worth it. I also wouldn't do any clownfish except for occelaris or percula for the same reasons. Even one of the safest damsels, the azure, ended up tearing up my clown. Unless you have a predator tank don't do it.
A Chromis is more like a cousin of the common mean damsels, just llike a clownfish.
The Blue Green Reef Chromis is easy to care for, beautiful, and peaceful. In fact, Chromis viridis is one of the preferred marine reef fish amongst aquarists, regardless of their experience level. This member of the Pomacentridae family is most recognizable by its gorgeous light blue dorsal side that slowly fades into a majestic pale green belly. The Blue Green Reef Chromis is desirable not only for its beauty, but also for its peaceful demeanor (despite its designation as a true damselfish) and ability to be kept with almost all other community fish, invertebrates, and corals.
iv'e had damnsels in my tank before..and your right if ya add them last they do better..they still get aggressive but the other tank mates pretty much won't take they bullying so they will stand they're grownd with them..
If you like damsels, then get them. Just be mindful of what tank mates you put in with them. Personally, I like them and find them to be very entertaining and interesting to watch. They do much better in larger tanks and seem to be most aggressive in the confines of smaller aquaria.