I don't use macros for Outfitter. You can set hotkeys though. Set an outfit to Outfit 1, then go into the keybind options (the normal one for WoW) and set the Outfitter outfits to the hotkeys you want.
I set my boss tanking set to CTRL-Z, DW DPS to CTRL-X, and tanking threat to CTRL-C.
On my holy priest, I set healing to CTRL-Z and DPS to CTRL-X.
I dont bother hot keying Armor sets - I just pick them from the drop down menu.
I do like to hot key weapon swaps - Dual wield / Weapon+shield/ Slow weapon + shield etc. Thats what i change in combat where the 1-2 sec time it takes to change gear makes a difference. dont forget you can swap out your ranged weapon with the same macro, so I equip the Crystaline Xbow when i use Dual Wield or slow weapon, the Gyro Destroyer for the standard tanking setup.