Never used 'em. I said "on my Amiga" 
I always thought DOpus and other directory tree things were a waste of time - a fallback to the Windows 1.0 way of doing things.
Anyway I've got a pair of model-M clicky keyboards that have outlasted anything else I've ever used for typing and will probably outlast me!
I got a model M for the criminal sum of 1 dollar and its amazing. Easily the most satisfying keyboard I've had.
