Afawk, padjal are exclusively hyur. They would never be able to be played because A) they are the rarest of the rare, and B) they are ONLY gifted in Conjurey and White Magic (which is what MAKES them padjalii). They are amongst the strongest physical beings in the world when it comes to raw power in magic. From a lore standpoint, allowing any player to control a padjal would completely destroy any meaning to their existence in the story.