So, I play with the item randomizer mod. Which swaps around the locations of about 100 different items in the game.
It has some kind of priority system, where the sweet loot tends to go in places where you found sweet loot in the base game. It's just not the same sweet loot you normally find there.
Anyway, I've had two runs where I was missing a key pair of gauntlets. A shaman who had gotten to cloakwood without finding the gauntlets of dexterity. And a mage/thief who had gotten all the way to the final battle without finding the gauntlets of ogre power.
Lo and behold, it turns out the gauntlets were on mutamin's body in both cases. That insane wizard with all the basilisks who turns people into statues for his personal garden. So I'll have to keep that in mind going forward that Mutamin seems to have some pretty nice items in his pool of potential loot.