Tech Tool for Flowing?

I came across this high tech pen over at think:lab and immediately thought of uses for it in debate.  Imagine being able to tap your flow and not only rehear what the speaker had said, but even play it back at a lower speed.  As a judge, I see this coming in mighty handy on those high speed theory duels.  I don’t know how the recording device would pick up the high speed speaking in a debate round, but its fun to dream about!