I always have a leatherman c33tx pocketknife on me. Blade, solid Phillips and flathead screwdrivers....and bottle opener!
I dont bring a knife to a gun fight. If anyone gets near my wort....
I have a big knife I use for everything that doesn't require shootin'. I found it in my grandfather's shed after he died. From what I could find online, the blade is from a famous German Company, Gustav Emil Ern. It looks like he made the handle himself.
What pocket knife for brew day, or edged helper? I use a Spyderco Manix 2 or an Endura or Delica. The Spyderco Delica is a little more PC, in mixed company.
What do you use for brew day?