From what the point of views of the soldiers at hand they were already armed with silver weapons of dwarven make since Greybeard was in charge of arming the npc's of the fortress. Being a werewolf was something they weren't aware of because he appears human. The soldiers received orders from Marcus's servants on Grey's authority. They also did initially come forward and say that they were to move to the throne without calling them out. However the next response didn't even have them being mentioned as such that is why they got more personal about it. When someone is ignored in their own home and expect them to be civil about it especially if they're racists. I'm not going to try to make out the generics of the imperial to be some sort of lawful good pariahs. Yuna is probably the nicest out of the bunch by a long shot because that's how Grey made her. Most of them would rank as lawful neutral, to chaotic good. 

With all that being said this is your choice to make as a roleplayer and meta gaming is not allowed as mentioned so I am fully aware that you can't change your post. I just wanted to warn you before hand that something will happen. Because while Grey can theoretically order the Grand Patriarch around he was still made by the World Disaster BorntobeBad. Grey's orders only extend so far as his authority carries weight around a select group of npc's such as Claudius, and the Grand Patriarch. Claudius is loyal to his men first for example then the throne. The Patriarch is loyal to the empire's legacy not the throne. They aren't the practical slaves Momonga has at his side for the most part. I'm not trying to come off as threatening, or abusive in power I'm just saying there are consequences. To give you an idea if Grey fought the Grand Patriarch, even with his magic anti-buffs, Grey would probably die. With that being said I'm not going to go pk'ing players for such matters he won't kill you but he certainly is going to exhibit his own magical power.