i've used them extensively, and i love them. i say them because i've had more than one taken over by fellow band members. i had a guitar play ask to borrow one, only for him to permanently attach it to his pedal board.
anyway, yeah. awesome pedal, definitely worth the money. if you want to hear someone use one more extensively, listen to Reed Mathis on the Jacob Fred Jazz Odyssey record All Is One (which is kind of hard to find, but he's on Slow Breath, Silent Mind using it a lot too).