It's very clear but I have it positioned so my eye level is right at the top of it, even with the windscreen fully extended (and assuming I'm sitting fully upright). Looking through it or even both pieces of plexi is do'able but I wouldn't do it for an extended period of time.
I have found the best part about the LL is that you can set the windshield below eye level and still have still air.
Jeff
A bad day on the C650 GT scooter is better than the best day at work