this is an awesome idea.

I'm able to use both hands equally well (though I might be hinging a tad bit to prefer the left hand). This could mean that I can alternate my pointing hand here and then

And that would be the last of Doug Engelbart's inventions to succeed in the market: http://www.cedmagic.com/history/first-computer-mouse.html

This mirrors my macbook setup [which I enjoy pretty much] with the external monitor: [mouse][keyobard][macbook trackpad] :-)