Well, I can't comment personally on the Scorpion, but I have a Twintask TL-1 on order for edc. I"ll post the result of the evaluation when I get it in.
What I will say is taht I know some guys who carry the Scorpion, rather than a Surefire in the very-bright incandecent catagory. they've been out in the same weather I've been in with my G2, and they work fine.