THIS!!!!
In 1997, I was working at a large companies machine shop. There was a kid there, and one day he was doing a job, using his Buck knife for something it was never designed to do. When told to "knock off" that behavior and use the right tool, his smart A$$ answer was, "Its a Buck knife, it'll take it!"
Abut a half hour after lunch, a blood curdling scream echoes up the from the end of the shop where he was working. He went and did just what he was told NOT to do, and his Buck knife didn't take it. The lock failed, and his right index finger was very neatly amputated at the middle joint, and the middle finger was almost off. Blood really spurting. While first aid was being done to stabilize and EMT's called, the Forman ran up to the cafeteria and got a cup of ice and put the finger in it. The ambulance took him to the Johns Hopkins hand clinic in Baltimore, and they actually reattached it. It sort of worked after 8 weeks. But it was numb from nerve damage as was his middle finger.
He was fired of course for not obeying the Forman who was also the companies safety officer. The dumb kid never thought his wonder Buck knife would fail, but it did. I've seen more cases of over confident and ill trained knife users with locking blade knives than I've seem old time working guys with slip joints have accidents. If you really want a knife that absolutely won't fold on you, use a fixed blade. All other knives that fold in the middle are already broken, its just a lock gives you some false confidence on a mechanical contrivance. At least with a slip joint, I know it will bite me if I do something stupid. If it does, thats on me, not the tool. I've used slip joints for 68 years now, and never cut myself since I was 12, and learned what not to do. That includes construction work, army combat engineers, and a lifetime of Harry Homeowner work and teaching kids, then grandkids how to fish and camp. My kids and now grandkids carry slip joints, and all fingers are accounted for.
