I really can't imagine chivalry being played with a controller, you would really lose a lot of speed, and if it has crossplay, someone with a controller would get destroyed by someone with a mouse since the combats, even if they are melee, are totally based on camera rotation / aiming.
I mean I guess it's doable on controller vs controller, would just be a slower game, but controller vs mouse on this seems not ideal, like shooters.