I took it out for some quality time at highway speeds today. It works just great for me. All of the wind pressure on my upper body is gone, all the way up to the lower part of my helmet. The wind starts picking up again at the lower edge of the visor. That works out nicely as it allows the helmet's ventilation system to work, which is much appreciated here in the desert (it was about 95 degrees this afternoon).
The shield itself was solid as a rock at speed. I had it up to 95 mph and it didn't budge. There is a little bit of vibration at at low speed. I need to go back and do the "preload" procedure, where you adjust the shield to just touch the headlight housing, which keeps it from jiggling at low speed.
The adjustment on the shield is almost infinite. There are three points on each side where adjustments can be made. The upper rake adjustment, the sliding tubes and the handlebar mount.
I like that it doesn't really distract from the basic look of the bike.
I like it so much, I'll be ordering one next week for the CB750. I normally remove the big Plexi 3 for summer riding and just put up with the wind pressure, but it seems well worth it. As a bonus, the handlebar mounts on the Plexi 3 are the same, so swapping between the two should be a piece of cake.
Popgun : The distance from the top of the key to the top edge of the shield is 11 inches. That's with the bottom of the shield on top of the headlight and the rake set to just clear the gauge cluster by about 1/4". That's about as low as it goes, but the shield can easily be adjusted higher, with whatever rake angle you prefer. If you look at the CB1100 picture on NC's website, their adjustment is much higher. A couple of inches above the headlight.