Isn't that why we're all putting swords in our SHTF kits?
Chris, firearms are
really nice in a SHTF situation. in a Zombie Apocalypse, however (and mind you I am here taking the premise of the TV series literally) one might, at some point, just not be able to get to the local Sam's Sporting Goods and replenish one's supply of 5.56mm, .22RF, .30-30, .25ACP, 9mm., .45ACP, 600 Nitro Express, or <insert favorite caliber here>.
A Katana, sword, kukri, pike, broadsword and similar weapon might be a really good idea as you don't need to "feed" them for them to work. Inconvenient as they only work close up, true, but there is likely a time that will come when one may really appreciate having such a weapon in one's remora.