CA has that law b/c of a carjacker who killed a police officer and injured others. I hope it's written such that you cannot have a protective vest on during the commission of a felony. Whether you're Sanjay the Cabbie, Hakim the 7-11 (stop 'n rob) clerk, Pete the Pizza Man, Ahren the Armored Car Courier, or anybody else engaged in lawful pursuits, you shouldn't be prohibited from possessing or wearing a vest. If however you wear a vest b/c you're afraid of a shootout with law enforcement, well, felony enhancements or "state of mind" presumption for felony would be good for the DA. Gotta be fair.