The switch on the printer is just a mechanical switch and operates the same as the relay inside a smart plug so there is no difference to the printer which you use.
I did have a kasa/tplink smart plug fail in a way that powercycled the device it was hooked up to on and off every few seconds which wouldn’t be so great for a printer. Turned out to be a firmware problem, after that I’m a little more shy about putting them on a printer.