Not one I've tried or seen in person - just noticed this in the Duluth Trading Co. catalog.

http://www.duluthtrading.com/search/sear...ocessor=content

If I'm reading the description correctly, it's a lot like a Spark-Lite, but with the flint wheel attached to the case, and waxed cotton sticks that sound like they're similar to the Spark-Lite tinder, but different in size and perhaps with a heavy coating of wax? I'm thinking if your hands are cold, it might be easier to hang onto this with the striker attached to the case, and one less thing to drop/misplace...interesting, anyway.