Interesting read. I have no comment. Last winter I bought a symmetrical narrow PH BB for my fix gear project. Cranked in almost all of the available offset to the right. My inside 38t chainring sits barely off the pant of the chainstay, the left crank misses by about1/2 a cm. Nothing has moved in probably 2000 miles. So far, the nicest BB I have ever used and I love that PW makes it possible to get exactly what you want (esp if you want to keep the left pedal close to minimize Q-factor for knees).

Ben