I'm a SMN myself and if I'm running Haukke Manor HM, I enjoy having BLM with me, cause he can basically take care of the adds alone ( I command garuda to hit them too) on the first boss, so I can concentrate on the boss itself. And BLM's aoe is neat on big pulls too (if I happen to be speedrunning it with premade group) But if I was to go somewhere on my BRD, I'd want a DRG with me, 'cause of the disembowel. It's pretty situational really.