I agree with all of the above - prepare better to your skills. However, if that's the only thing you can effectively hide from a search or left after losing everything - it's multifunctionality comes in handy. Many PSKs come with a scalpel blade for the knife substitute, which is way more awkward to work with. And I'd make that sharpener blade larger. The typical right angle machining on the pocket things is usually quite rounded on purpose. I doubt you can scrap anything with your typical magnesium block. The rod, despite its size, works fine on the video. Also I would never rock pound a cartridge as it doesn't sound safe at all (depends on the propellant).