I associate them more with a trolley throttle. Not exact, but they have a somewhat prototypical look, like some desk and pillar throttles.
That's one of the things I like about the KW It seems the vertical shaft, rotating crank throttle was nearly all I've seen.
I'd question the advertised 300w. I have an 18b the 30b's little bro. It has a 170w rating, the KW 190w. A guess... or perception vs a test, but I don't see a 20w difference, is see a 30-40w spread. I also see Marx transformers as being overrated. I.e. they are either under rated or Lionel's are overrated.
