My 2 cents is it's a 'cruiser' helmet and was probably designed to use behind a windshield. It's available in a LE version too, so may have actually been designed for m/c cops. I dunno, but with that said, I did wear one for about a year on a... uh hmm, Honda w/o a windshield (a Honda!?
Yea... I found it pretty annoying. The faster you go, naturally the harder it pulls. After 30 mins or so at highway speeds, you'll get the urge to unbuckle it and just 'let 'er rip'.