Here's my question: Have you ever had to use your PSK in a REAL LIFE survival situation? I mean real life, do or die, not digging into it for mattches because your main supply got wet or ran out. Or for your Photon or Pico because your main light died.
I have. A military model made to fit in a cargo pocket, of course I had rebuilt it to fit my tastes. I had to subsist on it's tools and my knife for 8 days in a jungle/tropical enviroment. Not as much fun as it sounds.