Frebaut. Jobs are NOT classes Your class Doesn't BECOME the job. Once you unlock the Job you equip it just like any other skill. It then gives you access to special skills. They said specifically not to think of them as advanced classes but if they are 1-1 locked thats all they are.

If your a Pug you can't be a Con. But if your a Pug you can Equip Monk. The problem is Monk isn't always limited to hand to hand in past final fantasies. Just like White Mage isn't always limited to Wands/Staffs (Actually it normally assigned Hammers in the older FF's).

Please stop thinking Jobs and Classes are interchangeable with each other when they are independent and should be independent of each other.