It all depends. Honestly I remember getting tons of comms on my blm and nin, but I think people appreciate the little things that someone does aside from the mundane run. Brds singing songs, nin goading someone, pld using cover, ect ect, things that don't always happen in more casual exp/tome runs.

As I recall someone saying "You're just doing your job" which is true in many regards, so if something stands out in a regular run that the person did than they will get my comm.