FWIW, I had a set of disc touring wheels built by http://www.prowheelbuilder.com/ a couple of years ago, and in spite of my best efforts at overloading my bike and hitting every pothole dead on, they have never gone even a smidge out of true.

I also had a set of wheels built for my Pelican by BoxDog Bikes in San Francisco last year, and they've never needed even the slightest tweak.