However, you can have an unloaded pistol laying on the seat beside you in plain view with a loaded clip sitting next to it.
I may not be remembering correctly, but I believe you actually have to store a loaded magazine separately from the gun unless you have a license. As in gun can be in plain sight, but the magazine (loaded) has to be in a bag, box, whatever, just not with the gun.
Maybe one of the SDA instructors we have on here could elaborate on this if they catch wind of the thread.