It's just a game and they should do whatever's fun and if people think that's longsword Bard then whatever lol, I just feel compelled to say something when people tell me I'm wrong so here goes.
Just because you found armor effective against longswords doesn't mean it wasn't worn during medieval judicial duels with longswords.
https://upload.wikimedia.org/wikipedia/commons/e/e7/Gerichtskampf_mair.jpg?20070715174219
"Judicial duel between Marshal Wilhelm von Dornsberg and Theodor Haschenacker in the Augsburg wine market (1409). Dornsberg's sword broke early in the duel, but he succeeded to kill Haschenacker with this gentleman’s own sword."
Would be pretty impressive if he did that without armor, and the image suggests they were wearing armor. While you may not be able to simply stab or slash an armored opponent, wrestling and inserting a weapon into openings in the opponent's armor were a part of armored fighting.
Again, find me some unarmored longsword duels. The personal honor duels a rapier is associated with are from around the 16th century onward and are completely different from the government sanctioned medieval judicial duels that sometimes involved longswords and I think people are getting them mixed up. By the time the rapier as we know came to even exist and become popular, the medieval judicial duel was practically a thing of the past.
