I got a #2-2 thanks to many posts about aftermarket windshields. I never ride with the shield at intermediate positions - either full up or full down. When down, I can see over the shield by what feels like 1-3". When up, I'm looking through it with the top at least 1-3" above my eye level. I'm 6'0" with 33 inseam (so shorter torso I suppose).
When down, the shield makes for great protection, albeit not as great as when raised. I ride with it down for everywhere except the expressway, then up she goes and the air pocket and wind noice are reduced.
I put the best picture I could find of my screen. The OEM Tall shield is big, but ineffective, since it's totally flat. When down, that one was worthless, and I found even city roads at 30mph I had it raised. The CB #2 has curvature unlike the OEM. Even when down, the air still flows above my faceshield, but not quite over the entire helmet. It deflects air UP thanks to the curvature, or "lip" as some refer to it as.
I hope that helps with the question. I understood it the same way astuber did. Again, it clears my eye level plenty when up, and is completely out of view when down.