the problem with that (and security through obscurity in general) is that if your opponent attacks at random, they still have a chance of getting you. having lived in a bad neighborhood I can tell you that you don't have to flash money, or even look like you have any money to get into trouble (someone chooses you at random for a gang imitation, crackhead wants your shoes, or someone is just straight up crazy). it's always better to have as much cover is reasonable, and beyond that concealment doesn't hurt.