Just thought I would update with my experience sans-windscreen.
SO MUCH QUIETER!
With the windscreen completely removed on my 2011 Versys there was no turbulence or buffeting, which made for a considerably quieter ride. I guess the screen, in its highest position, was creating lots of turbulence around my head, making for a very loud, uncomfortable ride.
Going to go back to the lowest setting next to see how quiet that is compared to no screen.
P.S. No windscreen was great, but definitely a little chilly in the morning.