Ok, a few miles under the belt and...............
It's an improvement over the standard screen. Less turbulence/buffeting and easily adjusted depending on what you want. For me (5'11"), sitting at 70+ (great that I have a handy airfield) is much more pleasant. That's with the screen at its highest and the aero foil fully extended. In this configuration, the wind blast is moved to the top of my helmet, just above the top edge of the visor. It's not as good as the big screen on the 1290SA, but it's doing a better job than said standard screen and I think I'll keep this on for a while and leave the smaller R screen I like off for now. At slower speeds, I played about lowering the screen and foil and am happy that there is plenty of choice to be had. I may still buy the SA set-up in the near future, but for now, and £80 lighter, this will do nicely. Only thing I am not fond off are the looks, but I'll no doubt warm to that over time.