No, there was a single case of this happening in a store, however it is not law and that is my mistake.

Potato peelers have literally one edge on the inside one you have to scape to cut. If you're talking about it having a round point, it is a terrible thing to try to use, bats, clubs, picks and hammers are so much better. Why the fuck are you banning people from carrying anything that has the potential to be a weapon without government approval? Ignore self defense as you have been doing for forever, if you want to ban anything that could be used as a weapon without "good reason" (who decides that? It's entirely subjective, you are tackling this from a witch trials guilty until proven innocent case) then EVERYTHING can get you arrested. This isn't going to stop people, it's really easy to make a half decent weapon, hell most of the deadliest Melee weapons in WWI were handmade and substitute, table legs wrapped in barbed wire, rail spikes, etc. You're not going to stop people from being able to kill each other, take away the means and they will just find other means, you tackle the WHY, why they are trying to murder each other. You seem to have given up entirely on freedom in the name of security.