Trying to get exalted on all the reps I'm missing, and it seems you can't do Cataclysm reps easily now - you can't buy the tabard that gives dungeon rep if you already have it in your transmog appearances (The game won't let you buy it - says you can't carry any more of those). Transmogging the tabard over one you are wearing doesn't give you rep in dungeons like it used to.
Anyone found a way round this?
edit: nm, seems to just be the Ramkahen tabard is bugged, I can buy the others. Where's the delete thread button???