Anyone use HID lights designed for ATVs?

[willtel]

I'm looking for some auxiliary lights for the front of my Bronco and I was wondering if there was any reason not to use HID off road lights designed for ATVs. The reason I am interested in them is that the housing and lens is smaller and from what specs I can find they seem to have the same output as the bigger ones.
http://www.warn.com/atv/lights/W400XT_HID_Driving_Lights.shtml

IMG_4343 by willtel, on Flickr