Cheapy new JEM switches
with my DNA the 5way is smooth as silk. Flicking through neck to bridge position through a high gain setting (or even a clean one) is a breeze without any switching noises.
My friends FP is the same.
But my RG570 is alot different. Clunk and click is the best way to describe it. You can hear it too! I never use to change pickup's live in the middle of a song with the RG. Too hard to do cleanly and the noise of the switch came through really loud.
With that guitar I spray a bit (read: alot) of WD-40 (spray lubricant stuff...dunno if you guy's get it over there) in the switch, then wipe of the excess. This fixes it for awhile, but pretty soon the clunkiness is back.
But it does fix it! Makes it feel a whole lot better (for awhile). But I wouldn't spray that gunk on my DNA or a VWH.