Tried it. Sold it. Nice air management but even at it's lowest setting I could not comfortably look over it.If you still are running the (terrible) stock windshield I would strongly suggest you consider the Givi Airflow (266). I got it and it makes my 400 into a much nicer ride.
The reason I mention this is that the Givi is wider that the sock one and does not work with handguards. Actually the Givi routes the airflow off your hands and therefore the need for handguards is greatly reduced.