This, I believe if it were anyone other than Bourbon, Gin would have had him killed. Gin and the BO retreated pretty quickly after Vermouth spoke to Gin, and Gin seemed to be aware of Scar Akai's identity, so, if it were a cop in disguise or anyone who isn't Bourbon, he probably would have been shot there and then especially if he was investigating the Org, because the Org is known for not taking any chances, E.g. Gin would have had Mouri shot on the basis that he COULD have something to do with the wiretap being stuck to Kir's shoe, even though Conan made it clear that Mouri was listening to the horserace.