I have mine done. I got it done at my buddy's audio shop. It works wonderfully. I just make sure to not leave my car in gear when I park. I know they removed the clutch sensor, but I was going to do that anyways. I don't use cruise control.
Tha Kraken: http://www.focusfanatics.com/forum/ford-focus-builds-general-showroom/285082-meet-kraken.html