Aren't all the non-LED Surefire's xenon?
There are a few exceptions like the "beast" which is HID. They also have a military heavy weapon light which is HID. But in general most are incandecent.
If so, I keep my G2 in my backpack, clipped to a shoulder strap in a sheath. Problem is I either carry that pack, or a shoulderbag. Looking for a single carrier that I can put stuff in and just move from bag to bag.
Probably some of the most popular are the
Spec-Ops Brand Pack Rat and Mini Pocket Organizer.
-john