I have the F4 on mine. I'm 5'8" and adjusted to the lowest position I mostly look thru the shield. If I sit very upright I look over the top edge.
They claim a very high quality poly, and it does seem very nice. Bugs wash right off without soaking. I generally like looking over a windscreen like I had on a BMW gs1150 before a stroke changed my lifestyle, but I'm getting used to looking thru. I like this shield. Very clear and quiet.