Cermet potentiometer temperature coefficients
To a first approximation, yes.

If you want to get really, really picky, you could consider that, for unequal resistances in the two sections (pot not at 50%) the two sections will dissipate different amounts of heat. It's true that the section dissipating more heat is larger, so the temperature rise should be about same, and the two sections are thermally coupled so they ought to be about the same, but there still might be some tiny effect. This would be accentuated if the wiper is not driving a very high-impedance load, since then the two sections would have different currents and different heat dissipation.

But as a practical matter, yeah, you can usually consider the voltage ratio (input across pot to wiper voltage) to have a zero TC.