Interesting also that nobody mentions the fact that it is not allowed (in most European countries) to ride on the road with a headlight protector... clear lexan or other... .
Maybe this isn't the case in the USA ?
Although in France and Belgium I don't expect too many problems, the German, Austrian, Swiss and Luxembourg police are known to be very, very strict and often write tickets for bikers with motorcycles that don't fully comply with all formal technical regulations... worse... they forbid you to go on riding (after having given you a hefty fine) as long as your bike hasn't been put back in its original, lawful condition.
I therefor chose the Wunderlich version, which hinges downward for riding in these countries... and BTW, I already do have a small nick in the original headlight lens of my present GS after a mere 7.000 miles on the road, which luckily wasn't bad enough to break the rather thin lens entirely.