My incandescents got really, really, visibly orange when dimmed.
The LEDs hold their color temperature when dimmed, though perhaps they do go even a slight sort of greenish tinge, but it's hard to tell.
The LEDs also do not seem to dim as low as the incandescents - where you could make the incandescents go down to what I might call "night light" levels, where you'd take them down to for your kid's room at bedtime, the LEDs probably only go down to, I'm guessing here, more like 30-40% intensity at their floor.
In practice, however, this has not been an issue for us. Even in party lighting mode, I never take the kitchen down that far anyways. It might be more of an issue in my parlor, where we do sometimes dim the chandelier down to candlelight level and keep the track spots up higher for a moody dinner party effect.