I actually thought about this earlier randomly.
Since it's told to us that duels have been around since the old times, and that Zekowa's group was what brought duels back, why not just have the Dustwatch like the idea and enforce a "All duels are now done with rubber bullets" rule? Of course, since Wihuwte knows this as a chief of the Dustwatch and the bandit's leader, he and his group go around using guns with LIVE Ammo to rob people without much resistance as a result of this. Fast forward to when you're yanking Wihuwte's leash and running around all over Shaaloani with him when Zekowa appears and shoots at Wihuwte with live ammo of his own and just barely misses him on purpose. This sends Wihuwte into a frenzy, REALLY wanting Zekowa dead now, and leading to the duel in the middle of town.
Of course Wihuwte tries to get out of it, even bringing up the fact that Zekowa shot at him with a live bullet which surprises the town and other Dustwatch members. Kemakka though doesn't mind, and even says if they want an "Old fashioned duel" that they are welcome to do as long as it's not shoot to kill. Ultimately being goaded by Zekowa and all the other townsfolk, Wuhuwte accepts the duel. Due to the shot at him earlier, he assumes Zekowa is using live bullets too, and since Kemakka, the sheriff, isn't stopping the duel, he just assumes if he shoots and "accidentally" kills Zekowa, he'll be able to talk his way out of it like he has talked his way out of things before.
Both shoot, Wihuwte's bullet barely missing Zekowa's head because Zekowa hit Wihuwte's hand with his bullet, redirecting where the shot was fired, causing Wihuwte's bullet to barely miss hitting a background townsfolk. This of course shocks everyone and Wihuwte looks at his hand to discover Zekowa shot his hand with a rubber bullet. All of it one giant ruse to expose Wihuwte. Kemakka, seeing Wihuwte's gun loaded with real bullets, along with Namikka's bracelet now on the ground since Zekowa shot it off his wrist, jokingly asks "Finally ready to tell me what that was about?", calling back to when he asked earlier during Zekowa and Wihuwte's first standoff at the beginning of the zone, and Wihuwte finally turns himself in.
Cringy to read I'm sure, but just a "what if" thought.