If you are handing someone your gun, your slide show be racked back to show proper respect it is unloaded. This is how they do it at gun stores and so should you.
When I look at a gun at my LGS, I remove the magazine and inspect the gun, then reinsert the magazine and put my finger in the chamber to insure somehow no round got in "magicially".
SHTF vs TEOTWAWKI you ask? SHTF, just some crap on the ceiling and walls, TEOTWAWKI end of the world as we know it. Orignally made by 9mm/®™©