The biggest thing I dislike about having MaxTrax outside the vehicle is how much they stand out & attract attention. And experience shows that fumbling about with locks/hardware is no fun when you're stuck in knee-deep snow, freezing temps, and more snow coming down every second.
My ideal setup would be to have a pad-locking container on the roof (preferably under a roof rack) into which the MaxTrax can simply be slid (in/out). Similar to the under-rack table mounts FrontRunner offers.
Great Idea!