I'm liking it, and agree about the naked handlebar - less so for brake maintenance, but more so for being able to clamp accessories like a dash/sports camera to the bar. I never drive without one, and the USB outlet will be especially handy for powering the camera if it's linked to the ignition.
Also agree with Tom about the drum brake, but remember that even the Big Ruckus used a drum brake for the rear. Gross.
I still want this PCX though and make it a keeper. I don't think my Mrs would let me though...