Do you have a link for the restraint variety of metal zip ties? The only ones a quick google search came up with were more industrial use that really wouldn’t be useful for the purposes one would escape from. Not doubting or casting a shadow on the comment, genuinely curious.
I would imagine that metal zip ties would be forbidden form the simple fact they would have to be thin enough to be strong yet that would also make them inherently sharp and thus have a lot of liability if used in that way.
Also, I think everyone should know at least someone in the Praetorian caste (LEO) to understand the tools they use in case one ever is in that situation. Just my 2 cents.
Cheers!
