Ive always been able to get some pinch harmonics,especially up the neck at the first 5 frets using my fretting hand.. I saw this lesson, and really was impressed by the way this chap got his harmonics off of the picking hand above the pickups at different points to create the note.
http://www.youtube.com/watch?v=5I5O8P-r5Rk&feature=fvw