I live in Canada, and DOT is law. You're not allowed to alter a helmet at all (though it's stupid, because you're absolutely right, it does NOTHING to alter the efficacy of the helmet's protection).
And you're totally right about Scorpion. They are awesome helmets. There's and AFX helmet I've got my eye on, but if it doesn't turn out to be as nice as I hope, I likely will go with Scorpion. What I'd REALLY like is a SHOEI, but I'm not droppping $700 on a bucket. Not right now anyway.