How difficult is it to run dungeons as classes, not jobs?

[Mysteltain]

Nope nope nope a thousand times no for Marauder/Warrior.

Agreed on all counts. Just forgetting to pop Defiance in Brayflox--which I, embarrassingly, do often--is incredibly noticeable. On the other hand, I see my DPS shoot up quite a bit, but I'd rather not cause the group to wipe for a bit of extra damage, haha!

I think it'd be neat to see a group of only classes run something like CM or Praetorium, though. After all, it could be that the additional utility granted to each member due to cross-class skills makes up for their overall lower stats. Maybe I'll see if I can get the FC I'm in to do that, just for kicks, heh. If nothing else, it'd be a fun experiment.