Ah, you appear to be one on those "you want everyone to run barefoot" responders. I'm happy to race in traditional racing flats, that way I know my times are my times and comparable to last year's and to other athletes.
I don't want to put in no additional effort or hard work but gain a PB two or three minutes up on my best simply because I put a pair of Nikes mechanical doping devices on. To me claiming that as a PB cheats my integrity and the sport.