I have a vent in my Clearview on my IS and it gives a blast of air to my chest when I open it. I will probably add the vent to all future windshields I purchase. The one I have is the same as the Goldwing ones and can be bought cheap off of eBay.
I've had the same experience on my Tourer. The question is, is the curvature of the OP's shield close enough to the Clearview shield to make the vent work?