Most of the air comes over the screen. I can feel it on the top of my head and on the back of my head.
Blowing forward.
With side wind deflectors there is little wind on my face despite no sidescreens.
I got caught in a hailstorm a few weeks ago and boy did it hurt!
M4 and even at that speed the hail came down and not blown away by slipstream. Luckily I had sunglasses on!

Plus Four MY23 Furka Rouge