The photosynthetic gorgonians are usually a total slam dunk. Unless you have a polyp nibbler in your tank.
I don't think coral aggression is a big factor usually.
Just get it, you'll like it
The one downside is that gorgonians do shed skin regularly, and sometimes if the skin doesn't slough off easily then it lets cyano start to grow and they can suffocate underneath. So you have to watch for cyano and blow it off or have it in enough current to keep them clean.