I've not used the Suzuki shield, but I'd be curious to try one.
however, I've used the MRA VarioTouringScreen for aprox 2 months and has worked very well for me at 6'4". It uses an adjustable spoiler-type piece at the top. At higher speeds it cuts about half of the wind that would normally hit your face (helmet front). This allows for the upright riding position at almost all speeds.
I know this isn't the same shield you mentioned, but in the spirit of "betterment" I wanted to add this....