I use clone key as well. i run three wow clients of my Imac G5 which is second gen intel chipped. i also use two screens, this is where i put two of the accounts. see crappy moblie phone picture of my nerd hidy hole. The key board is a wolfking timber wolf, i am trying to get a wolfking warrior xxtreme in oz but no one stocks it.

My mac runs the clients well, i have turned down the fps on the two slave accounts which is fine in pve but pvp i twike it a little higher.

cheers

edit: cannot seem to upload a picture. will try later