Keyboard Magazine shares an article about George Duke’s pitch bending techniques. Don’t miss the embedded sound cloud audio at the bottom of the page.
I agree that applying vibrato via the pitch bender is a great technique. However I’ve never tried to set the bend range to a fourth and playing the intervals in between via the bender. And the tip with bending two semitones up and then playing the note below on a monophonic synth was very insightful.
BTW: I’m pretty impressed by the sound of the Arturia mini V software emulation of the Mini Moog. It seems to be rather close to the original with its marvellous unique waveforms.