a must have skill for all proffessions, classes, races etc etc

very handy in tough situations!
and anyone can obtain it....cloth drops everywhere from humanoids nad easily trainable

saved me out of countless situations and im a priest

invaluable in even pvp matches

Since I specced shadow I cannot use holy spells (all heals) when in shadow.  I am revving up First Aid so I have a means of healing myself while in Shadow Form.  Saves mana lost switching back and forth and time, helpful when grinding.

very necassary for shadow priests, imo. costs too much mana to come out of shadow, heal then go back in.

first aid might be useful for priests coz if u r low on mana and have no potions for mana to heal then u can use the first aid items so ye I guess u could use first aid for a priest

If I might digress, I have a level 48 Tauren Druid, Feral specced and geared, with a Artisan First Aid skill of 240, who knows how to make Heavy Mageweave Bandages, and... I have not used a SINGLE bandage on myself or another player, even in instances and parties. Ever.

But this is different for priests, because they depend on their mana to attack and heal, while Feral druids use energy and rage to attack and mana to heal and shapeshift. So priests get a much larger mana drain; especially if they heal in combat instead of using bandages/PW:S.

Yup, priests may be the healing pros, but they don't have unlimited mana as opposed to druids who only use mana for healing.

don't forget, you can bandage yourself (or others) even while silenced.

Im a lvl 40 full holy speccec priet and imo first aid is a must, in a group you quite often use most of your mana healing everyone and incase of adds or unforseen events its a nice boost as mana pots take a bit of time. Also while soloing it helps with down time for a quick replenish. 

I have always used bandages with my Holy Paladin. Very useful when i don't wanna waste the mana. Now that I respecced to prot it's even better for me. Use it on all my characters, great skill no matter what class. Very easy to level too.

chances are your gonna end up with heaps of cloth neways, so u may as well since they come in handy and converting a stack of cloth to bandages sells more at the vendor as well as compressing 2 stacks of cloth to one stack of bandages