My wife falls asleep often while riding & I have the nicks on the back of my helmet to prove it. I keep telling her that I am going to hook a short bungee cord to her helmet & the back of the luggage rack so when her head starts to move forward it will spring her back & save my helmet from nicks. Of course that would probably cause a trip to the hospital to work on her neck, but that's why I guess we have medical insurance.
That's why I bought the EGC, my daughter would fall asleep and almost fall off my Road King, I caught her once with my elbow. I went to the dealer to get a back rest for her and noticed the EGC, went back later that day and rolled home with the Blue Momba. No problems with the EG.