I did mention the prospect of a professional duelist a while ago when we first saw the filming of the videos

https://forums.totalwar.org/vb/showthread.php?t=106076

I wonder if there will be limiting factors on this as otherwise you could develop an exceptionally good duelist and then have him/her call out the major generals in an opposing army. I suppose it would look bad to back out of a duel (loss of prestige) but undercover French Gentleman calling out Wellington would have been interesting before Waterloo