Hi Dave,
Yes I have this on my Clubsport. Mine also does it when pressing the brake at the top of its travel as well as when coming off it. It doesn't always happen and hasn't bothered me too much as I have more annoying creaks and rattles coming from various parts of the plastic dash/trim. Will you be having a garage look into the brake pedal issue? If you do please post any useful info as mine is still under warranty and if there's a fix I'd get it done. However, they might just say it's normal for it to do that.
Thanks