...I'd still buy an Apple MacIntel over anything else. People who buy Apple computers do so because They Just Work (amongst other reasons), and this won't change just because the CPU is no longer made by IBM.

Sure, I could perhaps one day hack OS X to run on a Packard Bell, but at the end of the day, it's still a Packard Bell. It'd be like fitting M3 mirrors, a Veilside bodykit and 20" alloys to a Fiat Punto. Sure, it gets you from place to place most of the time, but it looks stupid and breaks down periodically.