My plan is to make two big tarp curtains that I can pull out and meet together at a 90 degree. Sectioning off a little more than a 1/4 of my shop for painting.
Walls are crap magnets. Crap gets leand up against them, hung on them, etc. If you have interior walls they will collect clutter. I know a guy that has walls similar to what those plans are. He HATES them. For the clutter factor, plus they make the bays narrow.