Have had great success with Aeroflow screens
in the past, so decided to try it with the F800GS.
Yes the screen won't win any beauty awards; if I was interested in beauty I would have got a Ducati.
The screen is an extra tall (I'm 6' 3") and works very very well. 80mph (129 kmph) and no helmet buffeting. Still had adequate airflow through the helmet even though it hit 104 degF (40 degC) during the 2 hour test ride. Screen is clear with no distortion.
It appears a lot taller in the pictures than in real life, especially regarding the pictures from the front. Sitting on the bike, I'm a looking at least 2" above the screen.
The plan is to use this windshield for longer trips and remove the whole assembly for shorter and off-road treks. The only stock parts that need to be purchased to do this is a second set of windshield brackets on the right and left fairings (item 2 in the image below). Each bracket lists for $2.79 so it's not much of a cost.