Being a "Well known member" and with the post count you have I'm assuming you're part 107 (and I'm not having a shot if you're not, I've just noticed most of the big enthusiasts there are doing part 107). Surely it can't be that much different in the U.S. with the F.A.A. being the certifying and governing body?
It is very different here, which is why advising forum members in the U.S. to follow what may or may not be normal in Australia is reckless.
Most police here probably don't even know what Part 107 means, and they can't just look up your information with the FAA on the spot. And they're going to have jurisdiction over your personal activity on the ground, especially if you're on public property, regardless of whether a drone is involved.
And most people here don't have a "ground crew" to deal with law enforcement for them while they're flying, at least not on anything except a major professional job.