The mask seems a bit extreme to me, but to each his own.
Flying gear used to be fairly common wear for bikers in the post WWII days. Somewhere, my dad still has a leather USAAF helmet that he used while riding his Enfield-Villiers. I used to play with it as a kid.
My first MC helmet was one of those half-egg things like they wore on CHIPS, complete with the leather ear flaps. You could zip those off but it looked even more nerdier with just the straps.