No first hand knowledge but here is a blurb from wet web media;
"Behavior: Territoriality:
Hawkfishes are fine with other species as long as their tankmates are large enough to not be eaten or eat the hawks. Sometimes they can become territorial after being in the same system a long time (Savitt 1976). Occasional shifting, addition or removal of part of the habitat alleviates this problem. They may chase other fishes, but rarely do any damage. In general it is not a good idea to mix Hawkfishes for this reason.
Regarding reef systems: Be forewarned that a Hawkfish's large jaws and sharp teeth are ideal devices for capturing crustacea. Some small species are ideal reef additions, but they will eat crustaceans and "worms". Watch out shrimps!
These fishes display human-responsive behavior very quickly. They imprint easily and will "beg" at the surface and feed out of your hand."