I would love to have a windscreen on my K100RS (original screen with a Laminar Lip came with the bike when I bought it used) that deflected the bugs from my face shield, but allowed some air movement around my helmet in the summer.
Just to be clear, the original RS shield plus Laminar Lip is very comfortable, no buffeting, and my ONLY complaint is the bugs on my face shield.
I do have an Aeroscreen shield which could be mounted on this bike, maybe cut down with the Laminar Lip attached so the bugs hit above the face shield. If I did that, would my head really be out of the air flow and I'm trading a very hot head in the summer for a clear shield?
I'm asking the question here because I think the question of "how do you keep the bugs off your shield and still get some fresh air" is pretty universal