According to an interview from 1up found at http://www.1up.com/do/newsStory?cId=3175435
This armory system isn't exactly like the "job" concept that most Final Fantasy games work under. "The way I see it, the player can define how his own job works," says Komoto. "For example, if you have the Swordsman skill, that's enough to let you play by yourself, but if you've also raised your Sorcerer skill enough to unlock that skill's healing magic, that'll make solo play a lot easier for you. You can carry enough equipment around at any given time to change your style freely, and the system makes this easy by letting you change sets of equipment all at once."
This can mean one of two things, either:
you can have access to your other disciplines skills at a maybe watered down version no matter what class you are/weapon you are using.
simply change you equipment cast a spell and change back immediately.
I could see either way working in all honesty. Until I had read this post I had looked at the armory system as changing your "Class" for an entire event, not micro managing a need for a cure etc. If we really have access to simply changing weapon for additional skills or having all skills at all times, this game could become quite intense and enjoyable as it lets me experience a lot of roles :o
Edited, Aug 11th 2009 9:36pm by bleystrife