Since when? You can carry a pocket knife on you with a blade less then 3"? that can't be flung open.
"No that's a bullshit list. If they were real weapons they should been identified as such.
You don't need a reason to carry a legal pocket knife. If a police officer confiscates it illegally its theft."
You are both wrong.....from personal experience and having watched it happen to someone.
If you say you carry the knife for self defence or imply that you are going to use it in a manner to inflict injury on someone when asked by the police why you have it they will confiscate it. And can charge you with "weapons dangerous"
If you say you carry it because you like to clean your nails with it or like to whittle while you are bored they may let you go or still may confiscate it depending on the situation you are in. For example, I had a 1 or 2 inch Swiss Army knife, 2 blades and file, on my keychain and tried to go into the court house in Mississauga and had it confiscated.