@Jen
I’ve been looking at dual pots lately and the ability to get 5% accuracy from Bourns in cermet across a variety of pot series is attractive. So I can understand your interest and the tradeoff considerations.
Might be worth looking at long life options in carbon, too - I see those in 9mm from BI and Tocos IIRC. There’s certainly a lot more that you can do with a P092 (concentric, center tap, switching) or the Tocos equivalent than a P260 or 51/53 dual. Even Bourns 5/8” pots have their limitations.
I’ve taken to looking at my mimimum resistances (y’know, for any control that doesn’t go down to infinity),