I had thought about this the last time you posted it. It seems it is a mixed bag.
At least you could stand up and have a clear view. If it hit your face shield or your glasses, you might at best have a smeared view.
Not arguing, just giving another point of view. I have both shields, two that I look over and one that I look through. The look over ones look the coolest, of course. But on a cross country trip, I think I prefer the tall shield.
Also getting hit in the face with big hard bugs, little alone a small rock is painful and quite startling at the moment. Just my .02 and not worth a penny more!