This is not "mostly harmless". I consider this type of playing to be detrimental to the game atmosphere. It is behavior that should not be allowed out of any noble, let alone the council member of a realm. To insult a foreign duke in such a manner and refuse to accept the resulting multiple duel challenges. The fact that the Dwilight University is such a widespread, multi-realm guild only makes it worse. The improper behavior is therefore more widespread.
Hum, I see your point. Pierre was pretty happy to see the duel challenge, and though it was warranted. His main concern was to stop the improper behaviour within the University ("Have your duel, but have it outside.")
I didn't see it as a role of the DU to monitor who accepts duel challenges and who doesn't among students. I do try to maintain a separation between who you are in the "real" world and who you are in the University. This is a courtyard brawl between students that professors should not get embroiled in it to decide who is right and who isn't. But it is true that that's not very medieval: a Duke is a Duke, and should be treated as such everywhere.
