Ed wears... most of the uniform. He tends to not wear the tie that goes with it, and has the top couple of buttons undone, but he does wear the coat practically all the time. (He has not yet succeeded in modifying it to look more like his canon red coat. But it has occurred to him.)
As far as hair, it's generally tied back in a high ponytail (which... some of his icons show) using a strip from the old uniforms, rather than braided or loose. If he's tired or just been in the baths, he does leave it loose.