For your view pleasure:
http://www.chiefdelphi.com/media/photos/27814
We used it during competition, and therefore also practice.
The controller primarily controlled the elevator for that game. The first three buttons (green, red, and yellow) were three presets for the three different heights. The last two buttons were manual controls for up and down. The strum operated the intake/output of our rollers.
Well, it was insanely cool, the game was named "Rack n' Roll", and the fact that we got it to work was nice.
It presented no clear advantages over having a simple array of buttons, but it was a nice feature.
It was subject to overheating, but I suppose that's a flaw in the design, not the strategy.
The overall impression was insanely cool. Everyone was mesmerized by its use and it even got us an award.
- Sunny G.