The one I have that has the nice metal body uses a side switch, but it’s really small and narrow. I’ve gotten the hang of using it, but would’ve been better if it was a push button type.
The desk light that Jeff pointed out earlier from Amazon looks pretty decent. It has separate controls for tint and brightness, plus memory. Would be nice to see this on a light bar (of course, set as tactile switches, so you don’t need to look).