I use it like a normal human being and my goal isn't to destroy the knife or push it to its limits, it's to use it as long as possible. They have a 25 year guarantee on them IIRC. I don't think I'll ever need it though. It seems like a good, solid Gerber knife. I also like Bear Grylls, so there's a sentimental attachment I have to the knife. He's the one who inspired me to start doing /out/ stuff. Sadly, my dad isn't the type of guy who would do stuff like this with me, and he never did.
The main difference in the 1st and 2nd edition is that in the 2nd, the fire starter rod is rotated by 180 degrees so that it can't slip out from its sheath (which hasn't happened to me yet though), and the sharpener is one of those weird slit types in the 2nd. I prefer a good old fashioned flat surface. I suspect the latter does the job just as well though.