The Infamous Sword on the Back - Redeemable?

Follow-up video (best way for adventurers to carry a sword on the back): Wearing a sword in a back scabbard / sheath was obviously not common in history and has been debunked as a fantasy trope many times. But could you make it work, and is it really that terrible? My favorite online store for buying swords (worldwide shipping): Books on history, martial arts, and other things I recommend o