You guys act like its so hard to conceal the larger blades, but compare it to a 1911. They are concealed daily by the 10's of thousands. I have no problems concealing a Glock 35 9 months out of the year. If its only 1 blade and I have to have it already, I'm going with my hell razor. I could always thin out the edge at the base for slicing work and leave the rest the way it is for chopping/slashing/thrusting.

And who says you really have to conceal it? As long as I had ammo, me and the blade wouldn't be getting anywhere near anybody anyway unless it was to help them, which implies I've already decided they aren't a threat. The thread indicates SHTF so its about survival, not everyday business as usual.

IWB (inside waist band) carry will conceal most of your pistol/knife/mags etc inside your pants with a shirt or jacket concealing the grip area. It's not the most comfortable way to carry something, but it isn't that bad either. I just measured it and my Glock 35 goes 6" below the top of my belt with a slide thickness of about 1.27" - 5 times as thick as a blade. Dark colors and large patterns will "print" the least.

My fantasy blade for this would be an INFI camp tramp or skelly-tang FSH with cord-wrap or Res-C overmold.