I was disappointed at first. I had visions of it being some sort of Force Field so when it turned out to be just an electrically adjustable screen, I was gutted.
OK, so: Wossit like?
Well, it's very good. When it's all the way up, you're almost completely shielded from the weather, meaning you only need waterproofs on longer trips when it's really hoofing it down. And when you start filtering, you can drop it down for better visibility. And when it's raining, the screen creates a slight downdraft on the visor which blows the raindrops downwards, off the field of view. It's fab.
If only the passing light was as easy to get to/control as the screen.