Quote Originally Posted by JakzChurchill View Post
Just saying there is some crappy cop out ways of side stepping the lore issue.
Another possibility is to alter dialogue options for players who have unlocked ROG/NIN before they reach that point in the storyline. It wouldn't take much; just something along the lines of, "I've never seen that style of fighting!" to "You fight much like <your name here>!" and "I will teach you" to "I will join others in teaching you".

I make no predictions about what SE will choose to do; making the class inaccessible until that point in the storyline would be the easy method, so I find it more likely, but who knows? SE may surprise us and integrate ROG in such a way that it could be a starting class, and NIN accessible as a job before that point in the storyline.