I usually get them almost every run.

As a NIN, I probably get them from the other DPS because I don't save my Goad just for the tank. For example: BRD will get the Goad from me if his aoes are needed. I'd rather hit him with Goad than for him to use Army's Paeon if me and the tank isn't low on TP.

As a BRD, I have a macro for The Warden's Paean for when the tank is a WAR. My comm may come from him as I'm preventing his Pacification, even if he does not have a Berserk macro. I sometimes think I get the comm from the Healer, since he don't have to worry about Esuna/Leech, etc.