So you should wear a "chesty" as per ...A compromise would be a camera you could clip on your, er, breast - good footage of your rides but still there to catch the moment you are decked.
http://www.lightinthebox.com/adjustable-black-chest-mount-harness-for-gopro-hero-3-3-2-hd_p1177270.html?currency=GBP&litb_from=paid_adwords_shopping&gclid=COb7ga6Qn8MCFUzMtAod_B0A9Q
or something similar ?