One isn't skimping when one can't reach a given resolution any other way. Seriously, PenTile gives you the ability to reach higher effective (as measured) resolution for a given number of subpixels. Simply stated, for a given number of subpixels, it is ALWAYS better to use PenTile.

Full Disclosure: I'm the CEO of Nouvoyance, the company that develops PenTile.

I can't comment on the author, but I can and will comment on PenTile OLED resolution claims:

http://www.nouvoyance.com/files/pdf/CV%20Application%20Note%...

Please download the above white paper on PenTile OLED resolution. Resolution is found by counting the number of monochromatic, desaturated (black&white or otherwise not fully satatured colors) lines and spaces:

NOT "pixels" or "subpixels"