Your comment is worth a thousand words. This is true of pretty much any line of work that requires to-ing and fro-ing between things - translation (source lang

Your comment is worth a thousand words. This is true of pretty much any line of work that requires to-ing and fro-ing between things - translation (source language / target language), graphic design (draw area / toolbars) etc. Pretty much the only use for a vertical screen placement I can think of is browsing, as written in the article. Or, arguably, something like unobtrusive writing.