
I always assumed that if you were mainly a Fire Elementalist, then you would wear Pyromancer armor or mainly Water, then Hydromancer; but the stats just say something like: Armor +15 (Vs. Fire) for Pyromancer and (Vs. Cold) for Hydromancer.
So is it a purely aesthetic choice, or are there reasons for choosing armor that matches your specialization?
Finally, would it matter at all if you took a chest piece from one type and the other pieces from another? Or would you lose some benefit?