Hold on guys, I’m not sure the projector lens and HID lights must go hand and hand. Projector lenses have become the Germans (and a few Japanese) manufactures preferred way of aiming light to the road but may of today’s new cars offer HID lights without the projector lens. My SUV had the option of HID lights but either way it comes with projector lenses.
No matter what light source is used, aiming them properly and in the right setting (mainly reflector housing) will produce a headlight that does not blind on-coming traffic.
One last note; The concern about being "illegal in the US." You are correct, most changes to the OEM equipment is not legal. If we apply that rule to all parts of the bike, heavycycles.com brake lights and turn signals would also be outlawed. I think we all agree, illegal or not, his products are a clear improvement to the bikes visibility and safety.