So are they more safe in the bed? With one of those covers?
You can tie down ATVs on top of them. They're pretty stout, and lockable. If someone wants to get into they could but with a lot more effort than most bed covers. I would trust my guns locked up under that before I'd trust them in my Jeep.
And curses be to BBI for bringing this up. It's probably just increased a notch on my priority list.