They will keep the seagulls, and associated parts out of your eyes!
...provided you have the shield down on impact.
3.5 Kg X 135 KTS = Mess and/or Death
But headsets sure are cumfy and the passengers don't complain that they don't have the same protection as you since they have the critical task of sitting there.
My vote is for the helmet.
But hey, we all know there aren't many large sea birds frequenting the Atlantic...
...sarcasm
