One exception to that rule would be students. It's not exactly "office productivity", but OneNote with a stylus is heavenly for taking notes in-class. It's a shame the RT didn't have stylus support, or I'd be all over it.
Also, at least at my college, effectively no one takes notes with their laptops or iPads anyway. If they're out in class, it's for Facebook or something else totally unrelated to the class itself. Notes are still written down on good ol' paper.