I had HIDs in an old car of mine which had reflector headlights. If you use the 'R' version bulbs, IE H7R, they are designed for reflector headlights. They put a small cover over the top of the bulb lens to stop the glare.
As said above, not causing any problems for other drivers. Haven't had a single person flash me. Can see the beam pattern. Also no need to take the bumper off to fit.