Never in my working life have I either seen or done this. Yes I have some OCD with both Schematics and PCBs, but that design behavior is to a whole different level 
Pins and pads have numbers and components, markings, not to mention, boards usually have silk, and stuffing diagrams often exist, so checking is not difficult.
I just cannot see the point with that extreme orientation.
JMHO (then ducks for cover).