If used correctly this pedal can be a true extension of your creativity, everything you want to play but couldn't produce with just one instrument, of big jumps in tonality that are just too far away on the fretboard to be able to play on time and still manage to pull it all off, this pedal is your savior!! ;) Use is like an instrument, as this is what it is, not an effect ;)
I always wanted to try one, and having bought the whammy DT for my guitarist in the band now we're getting the Bass whammy to complement it, and remove all the limits tonally for a classic rock band setup of one guitar, one bass player a drummer and a singer ;)