re: destroying shoulders with long keyboards:
I tend to run mine with the mousepad below and to the right of the cursor and numpads.
I'm too lazy to tidy my desk for a snap, so here's an old one:
(btw, that corrosion was lacquered down, rather than painted over. And it has a bolt mod, personal (pre-soarer) converter, ad-hoc locklights, and also some of the barrels were constructed from strips cut from an M, as an experiment - one of which was unsuccessful - at least I can't get numlock stuck.)
dfj