My silver 03 also has an MRA screen with adjustable lip - although I broke it Wednesday morning by running into the back of a BMW (bike, not car, phew!).
I am 5' 11", and with the lip fully collapsed / folded away, the airflow is on to my upper chest, about 3-4 inches below my chin. With the lip fully extended airflow is a bit turbulent but totally misses the shoulder and neck and lands somewhere on the helmet. I prefer to keep it folded down in summer, but in winter I tend to keep it fully extended to protect my neck.