David Gilmour Echoes Seagull Trick

Ah Ha, the old wah plugged in backwards trick. I tried it on a Les Paul instead of a Strat and it works if both pickups are on, and the wah pedal is up, and you use either tone control by itself to do the theremin thing.
http://www.youtube.com/watch?v=MtZDszk3S3Y
http://www.youtube.com/watch?v=MtZDszk3S3Y