Sounds like a great idea, do it and record it.
Well, I had my wife try it yesterday. It was a fun time!
She knew something was up, but she was a good sport. After clicking around on the desktop and the bar a few times, she asked me if it was some kind of joke since I was laughing. So I had her press mod + b and then told her how to close it. I briefly explained how the system works...THEN...I told her that basically, a user has to memorize which different keys to push to open different programs, and she gave me one of those "can I just slap you now" looks and got up from the computer.