Multiple Classes is a lie

[C-croft]

I'm pretty sure you can't gear Monk in AF1 and it's Relic weapon without being on that job. So yes, there is already precedence in-game where you need to do content on the job you want to gear.

Yes, yes you can. Relic weapon, has to be done manually. But the rest.... you can.

PS: I am assuming you are referring to AF+1, as AF1=AF, and if you are unable to obtain that, you have no business gearing up the character at all.