Hmm, I'd be interested to know also. I have a Scorpion LED (same body), but don't know anyone w/ a KL1 near me. If the thread pitch and angle of the threads are the same, then it might work.
The KL1 doesn't screw all of the way down onto the Scorpion body, so it's probably not water resistant, but it definitely does fit on there and the KL1 does light up.
underdust - when you say the KL1 doesn't fit all the way down, how far does it go? Do the threads match up well?...and likely just that the KL1 runs out of threads for the Scorpion tube to continue threading?
I'm curious as I'd love to pick up a VG FB1 body for my Scorpion if the threads are actually compatible.