Should Rasaad wield a staff?

I keep looking at Rasaad's portrait in game and the other art available for him and can't help but be bugged a bit by him having a staff and not being able to wield one in game. I know Monk's have their own restrictions on what they wield, but I've often pictured Monks as wielding staffs. Seeing it in Rasaad's art makes we wonder if this couldn't be changed, even if it was just for Rasaad.

I'm wondering if it's theoretically possible for Monks to wield staffs or do they not have the required animations?