Well, technically this is a brawl not a duel - most of the normal code duello is being ignored - everything from delay, apology, grant of offense, seconds, etc - the swordmage has been very sporting both as a player and character.
The green knight is very lucky that the swordmage didn't demand that the weapons be spells (the first insult clearly being from the baron she gets to choose under most of the codes, and the others generally let the ranking person pick which is again her) - and the baron very lucky she allowed the switch at all...
From my perspective Robhan is fairly impartial - the Sword Mage is a wizard he doesn't know well, the Green Knight a warrior whose honour he doesn't want to injure. Tornilen with a new ruler might be more amenable to godliness and it isn't as if the mad baron will get to run it anyway...
Of course that wouldn't stop the Pontiff simply declaring the duel over, he;s already ignoring the clergy/noble divide already, and I'm not sure if he technically out-ranks a baron to demand the duel is paused while they gut the baron... assuming that the Sword Mage would let anyone interfere.