The kind where the pummel pops off and the handle houses some matches and some ninja darts to assassinate the bears that wonder in your camp
(LOL just kidding)
Assuming it's legal to use a sword and you know what u doing, are you prepared to do this to people?
If so, well then cool, go ahead
Lastly here's some motivation
Back to reality
If you want really want to avoid SHTF then forget about using a sword. Think of a scenario where you've dismembered an attacker.
The fact you used a sword on your attacker can easily tell the courts your intent was kill him and not defend yourself.
If they rule in favor of the person you maimed then welcome to SHTF, when you potentially have to pay damages the rest of your life
for preventing him from being able to work again
Lets say you decapitate your attacker and the courts convict you of murder. Welcome to SHTF when you get locked up with gender
inaccurate men, who will with show you how to really use a blade.
Oh crap! You don't have your sword to protect you anymore