Honestly, if people paid attention, Estinien is likely one of the cleanest characters we have, he is the only character to ever show open disgust at his armor being stained (stain people is not filth) and wants to do nothing more than to destroy it and reforge it completely. He is one of the only NPC's that changes clothes and has changed from civilian clothing to armor quest to quest. Alphinaud freaks out when you mention him not bathing.