The Madness of the Whammy!
Straight out of the box this pedal is awesome! The colour is Ferrarri Red, enough said. The Whammy can create classic harmomnies to your guitar lines ranging form an octave down to an octave up. The Harmonies are chosen via the rotary knob and the foot pedal can select between the preset harmony range (e.g. a 3rd up or a 4th up , a 4th down or a 5th down, or the more fun 1 octave down and one octave up and many things in between.) It's cool for guitar solo's or fattening up your riffs. It can keep up with quick guitar runs but of course it gets confused if you try and play chords.
Then there is the Whammy part. Here your guitar signal is warped into space! In this Mode your original guitar signal drops out, meaning only the effect signal sounds form your amp. It can shift the pitch of your signal form 2 octaves down to 2 octaves up, and a gain the pedal lets you change this on the fly creating crazy sounds.
It also has a detune mode, which to my ears sounds a lot like a big chorus effect on the guitar. It's ok, but the rest of the pedal is heaps more fun.
The pedal is very solid. I wouldn't be at all worried about using it on stage. It's intuitive and easy to use and comes with a manual to explain the controls (the MIDI In is a nice touch and explained in the manual). This pedal rocks and will definately spice up your sound no matter what style you play. It's practical and a blast to play with.
The service I got from Sweetwater was excellent. I don't live in the U.S. but everything was still quick and easy.