I'm sure that the mail parking lots are vastly superior in CA when compared to AZ?
Concrete parking blocks are likely not as cool as granite, but they have the same effect. If you're going to play on the parking blocks, and don't keep the weld rings up, will pay for it. Have seen plugs so worn that the edge is gone, no longer holding the seal ring and never had a problem getting them out. Weld a big nut on, zip it out with an impact and replace.

Doesn't matter if the tool used to remove, is an allen or hex socket, will still wear down if allowed to contact.
If you are that hardcore, best to weld up the drain plug and remove a stud to drain. But I prefer having/cleaning the magnet, gives a good indicator if diff condition and like I said, when properly torqued to spec, have never see one back out, even when mostly worn away. I do carry a spare plug, but have never had to use it.