Good point T-6, about the crash protection fears, though I'm of the opinion that if you are impacting the dash board in the event of a crash, you're already having a very bad day! In my application, I don't expect to be traveling very far out of the seat even in the even of a crash since I'm sitting in a fitted aluminum racing seat and held in place by a 5-point harness attached to a 6-point roll cage.
Nevertheless, even if I weren't wearing a harness, or even a seatbelt, I think I would be more concerned about the steering column coming through my chest, or going through the windshield than the impact with fiberglass or carbon fiber.
So in short, I would say to those concerned with the crash safety of a fiber material dash, a logical first step might be to wear a seatbelt with at least a shoulder strap so you can't hit the dashboard, or the steering wheel, windshield, or anything else not intend to be passed through by the human body. And that goes for the stock dash too!