Almost didn't want to post these because now I realize just how filthy my dash and windshield are after looking at the pictures. Kind of embarrassing. But I think the pics give you a good idea what this anti-glare screen protector does.
Recommended on another thread was the Power Support iPad mini anti-glare screen which I bought from Amazon
http://www.amazon.com/gp/product/B00AARSPGE/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1
Of course, the screen is not the right size, so I had to trim it to fit the AVIC.
Generally, I am pleased with the result. It does reduce slightly the brilliance of the screen, but it's still pretty darn bright. You can see from the angle shots that no matter what, when you have direct sunlight hitting the screen, viewing at an angle is washed out. It's the straight on viewing angle in these pics where you can really tell a difference. What I was noticing before was reflection from the seats and other objects within the truck. The screen protector seems to have really cut that down. You can see difference in the 3rd and 4th photos.