I never purchased this as a SHTF tool. I just think its a handy tool to have, and if you can use it even better. For the room it takes up...why not? I have simply put it in my camper toolbox.
- What if you want to re-use a lock in a different location? ie unlock one gate, but lock another.
- You can pick up locks along your travels and use them else where for your own purpose. Obv, you would only use on places you need to stay locked, and not general entry/exit points.
- Post SHTF, if you need to gain access for supplies/ammo/meds etc but can not afford to make any noise?
Im sure if you think outside the square, there may be many, many more uses for them.