I've seen setups like this but have never really understood the point. You're either left sitting far away and scaling everything up (reducing the resolution) which defeats the purpose of having a larger display or you're exposing your eyes to the constant light of more screen space than you can actually see and putting up with the eye strain of looking at a 1:1 virtual-to-physical pixel ratio. It seems to embody the stereotype of American consumer logic, i.e. bigger and more is always better.