The first ever Mount and Blade: Warband video I watched was from BedBananas, or the Asdfs
I would then come across a Malakith video, and the rest is history.
I don't know if it was that video, but honestly watching the series of siege events, and massive 77y linebattles was the biggest draw for me.
I did enjoy the sight of Mount and Musket, but I never really got to play it all to much.