Me, I thinks it's a pain because I forget to take off the glasses before removing the helmet and so flick the glasses halfway across the road.
Done that trick. Very annoying.
Always outside. If you put the arms of your sunnies under your helmet straps, you are possibly compromising the fit of your helmet.
I always wear mine outside/over... I imagine it's different for everyone, depends what you're used to.. I doubt there's any valid reason for doing it either way... I imagine though that if your helmet straps are tightened correctly then it would be slightly unconfortable with the glasses wedged between the (tight) strap and your face...? I'm only guessing though as I don't do it!
Yeah - sorry that was me.
I was also facing the wrong way and was sitting on my helmet. We've got to start somewhere though...right?
That says it all. There does not have be a reason, it's just the way it is.
Although I believe that it's more comfortable and elegant and also stops the straps flapping about in the wind.
Was just about to link to that same page now that i'm home and can get to the bookmark
Thank's saves me doing it.
Reason = Pro