don't listen to chris king.
Truth is, that article from chris king is really old, but you don't hear about bikes with integrated headsets wearing out their head tubes, now do you?
The crown race isn't really in the frame, it's just a tapered area where the cartidge bearings can sit. The cartridges contain the actual bearing races, so the headtube never wears out from 'steering'.
You know you can "wear out" the head tube if you install and remove enough headsets, right?
It's not that different from how the square taper cranksets will eventually fit loosely, because the holes get squished.
Last edited by AEO; 11-02-10 at 10:22 PM.