You can buy a bladless rebar which has the added bonus of scissors.
Although because of the awl and saw blade i don’t know if you could still fall foul of a conciseness officer of the law.
I was stopped at the airport (visitor deck, is inside the secure zone, but still separate from the flight zone). Anyway, they let me keep my baby-blue Mini Griptillian, but insisted that I put the Vic Spirit XC in a locker
So, there seems to be a degree of randomness, which is what makes all this so difficult.
Trying to explain that it is "knife-stabbing" and not "knife-cutting" for a reason (and for the same reason shorter blades are considered safe) can go both way, some may taking a "lecture" the wrong way.
What worked for me, when importing knifes that are borderline (dagger with a blade length of 301 mm, 60-300mm is illegal, but 301mm is legal, but length very much depends on how you measure), is that I wrote an e-mail to the customs-information-desk beforehand, then when the item arrives and causes trouble, I simply forward their own reply to my inquiry. So far, that has worked 2 of 2 times (so, not really statistically viable, but I will do it again). Essentially, you could write an E-mail to whoever is responsible for things like this, then carry the reply on your phone. When in trouble, you show the e-mail reply to the officer.