i had HID's in my IS200 and no matter what i did because of the intensity of the light no matter how low i put them they would still spray light everywhere.
i found a solution though that made everyone happy (ie on coming traffic, myself and ppl i followed) it was head light eye lids / eyebrows. they didnt interupt the light Beam but prevented annoying spray of the light.
worth a try. HID light is awesome compared to halogen.