On the more vague questions I have decided to just take a "live and let live" approach. If I can't find an answer to whether a law applies or not, I'll just use my best judgment and go for it. If they stop me, they stop me. Life is too short to worry about every minutiae of every action. If I attach something to a helmet but it still saves my ass in an accident, I'm not going to worry about the warranty.
As for the video: I just went to my YouTube account to retrieve the link for you and was hit with this message when I tried to make the link public again:
"This functionality is not available right now. Please try again later."
Must be undergoing maintenance at the mo.
If you are around tomorrow, I'll repost the video in this thread. (Maybe you'll get a chuckle from the Tron-like helmet style as I do? 
)
I will also check again a little later tonight. Maybe it will be available soon. I'll be up watching TDS and Colbert.
BBL
Edit history
= new reply since forum marked as read