Could you see Remus Lupin having long hair?

If you think about Remus Lupin, the character, not the actor who portrayed him in the movies, could you see him having brown shoulder length hair that tied up to a man bun? What would you think if you came across a FF that described him being kind of hot as a teacher but not in the obviously handsome Gilderoy-Lockhart-type way? More like he‘s hot when you get to know him more and see past his hand-me-down robes and scarred face etc. … More like the way he carries himself when he is in his element as a competent teacher and skilled duellist with a surprising sense of humor you wouldn’t assume at first because if his quiet and seemingly shy outer shell.

TLDR: What do you think of a bookish, smart and sexy, calm teacher Remus Lupin with his hair up in a bun?