We do this with twin LCDs so users can easily compare portrait documents. Works pretty well.
Awh!
So cute.
dont give her cigarettes!!! 

It's a great idea, except for one thing...natural human physiology.
We have two eyes, side by each. Not on top of each other. our field of view is something like 1: 1.66, horizontal.
You monitor config makes you move you neck more. I think. Maybe not.
TrulyCdn
Had to spend more time scrolling down than I did across so I guess I get the jist of it.