Outfitter Add-on at Curse.com:
Outfitter allows you to create multiple outfits and equip them with a click of your mouse. You can layer outfits, create outfits optimized for a particular attribute (ie, fire resist or maximum defense), and have outfits which automatically equip based on events like mounting up, stealthing or changing stances and forms.
I use a fire suit, a wrath-centric suit for cheap-o DPS, a healing set, and a typical raiding set. This could save insane time once I crank Jal back up.