It worked fantastic - virtually no buffeting, in fact you were in still air, which even made my lid mist up. Motorway miles were really easy to do even at 100mph+ (obviously my own private stretch of motorway )
Screen was of real quality construction, thicker than the original and optically very good.
Didn't like the looks of the bike with the screen on however. Plus I'm 5'11 and the screen was just too high in my sight line for comfort, so I didn't really like it for commuting.
I was tempted to keep it as a touring screen for when I'm doing big miles, but decided to get rid to buy something else instead.