I own quite a few double edged knives, 3 Cold Steel Tai Pans among them. But I don't carry them outside my home, even though California state law allows it. I've had encounters with law enforcement and know from personal experience that they lie in police reports then purjure themselves in court. The courts are no place to expect any sort of justice either. They supposedly read, write and speak english, but when it comes to interpreting the law, suddenly things that are crystal clear to anybody else, become gray and uncertain to them. So in the end it doesn't really matter what the law says, they ( police and courts) do pretty much whatever they want.
Maybe if I lived in the Mojave desert or in the Sierra mountains or foothills far from the crowded city I would feel better about open carrying a double edged fixed blade, or any fixed blade for that matter. But not while living in the wicked city, no sir.
Inquiring minds are curious.