I do not actively RP, but I do find myself giving my characters personalities. With that said, I definitely see my main, Kye, as a Summoner primarily. However, he is also become gifted with astrology since reaching Ishgard. I picture him walking around with both his grimoire and star globe at his side.

Similarly, my alt character is primarily a Warrior. But she has also been trained in martial arts (Monk) and is currently training to use firearms (Machinist). I created her to play the melee classes I didn't think suited my main mage type character.