So on my Alliance Paladin I visited the tabard vendor in Ironforge where, among other things, I was able to buy a Blood Knight Tabard (usually reserved for Horde Paladins), and a Competitor's Tabard (which I have only ever had on a long deleted, level 30-something Gnome Mage from years ago). Not sure whether these things were added as of this patch/maintenance, but it's worth checking out.