Even with a 27" monitor I choose to use second monitor, and when I am cross referencing two documents I will put one on each monitor. The 27" could easily hold

Even with a 27" monitor I choose to use second monitor, and when I am cross referencing two documents I will put one on each monitor. The 27" could easily hold both documents, but it just feels so much easier to use two screens. It seems pretty unlikely that two screens on a tablet would be viable in terms of power and cost, but I can totally see it being a superior experience.