JAT, I was thinking halogen for a low beam as I occasionally ride street, and as a back-up for the HID, should it fail off-road.
Understood. Thats becoming an old philosophy however.
I've not had a failure of an HID in ... well, something like 10,000+ off-road miles. I'd say, they are pretty solid if using some decent product(s).
If you run both. How are you going to mount those two bulbs (Halogen and HID)?