With the edging on it now hits just above my eyebrows. Noise is reduced slightly too. Basically, expect the edging to direct airflow about an inch or so higher. Wearing a full-face helmet I can open the face shield and not feel any strong wind on my face. With the shield down the wind hits my helmet slightly higher than before, just above the face shield.
Noise reduction is less dramatic with a full-face helmet, too.
In either case added side protection is negligible, despite the fact the edging wraps around the sides of my windshield. I did, however, notice added turbulence around my jacket. I have noticed no change in either. The edging also didn't obscure my vision, even though it's nothing but a big fat piece of black rubber inches in front of your face. A thorough test of this product would require installation on several motorcycles.