Ulfric used the Voice "for purposes of conques" only once - when he took Markarth from the Forsworn. Tell me he was wrong! As for the Graybeards - Ulfric was not a Graybeard and never intended to be one. He just recieved a training to use some Shouts. If Thorygg was a real High King, and not just a... man who thought the Legion can protect him from everything, he would receive some training himself Ulfric used the Voice to defeat Torygg. Using the Voice aggressively to defeat an opponent -- whether the opponent is an army or an individual -- and take something from that opponent -- whether it be a city or a title or simply a life -- is conquest. Using Shouts in a duel is just as forbidden by the Way of the Voice as using Shouts to take a city. Ulfric himself says he was in training to be a Graybeard from the time he was a boy. Where do you get that he never intended to be one? If you join the Stormcloaks before doing "Dragon Rising", Ulfric has a lot of dialog on what it means to be dragonborn and his own history with the Graybeards. The Graybeards do not train just anyone who walks up to their door and asks. They aren't even like the College of Winterhold, which will admit any student who passes some test of ability. Thats right, to become a Greybeard, there has to be evidence, not physical, but something else that you are worthy.