The way I see it, we trust Jerry with our money and he trusts us with his knives. We all know what intentional abuse is and would be hard pressed to expect a man to warranty it. If you heated the knife to destroy its heat treat, cut it with a torch, soaked it in acid until there was hardly anythiing left, rigged it up in a hydraulic press and tried to bend/break it, etcetera. Shove your knife into the dirt at the rifle range and use it as a target and you may face some warranty issues.
On the other hand, chopping, pounding, prying, slicing, dicing, hammering, whacking and all other manner of knife use and misuse is something I thing Jerry would come to expect from the people that buy his knives. These are truly tough use knives with a no BS warranty. That is meant both ways: no BS from ther manufacturer, but no BS from the customer, either.
FN: The above post is my personal view and in no way represents the official position of the Busse Combat Knife Company, Jerry Busse or any of its employees or representatives.