I run my five accounts all @ full screen using keyclone maximizer... they are simply stacked precisely on top of eachother. When you do this, having each window exactly the same size/resolution - the PiP feature of Keyclone really shines. On my rig the screen switching is instant and completely lag free. It's awesome.

I dont give much of a crap about viewing my clones either, so if I do need them for looting, or as a new leader if main dies, I hit macro for the toon i want to select next as focus and follow which is also the key for that toon pip window!