Very true.
The dev. team still hasn't specified that Jobs will be limited to 1 class. It is still up for debate in the community whether jobs unlocked (say Thief) will be playable by class (Gladiator [sword]; Pugalist [Hand-to-hand]) or just playable by 1 specific class. For now, the community can make assumptions but nothing really specific has been provided to how the system will work exactly.