yes, it's damn near impossible unless the guy brought some portable power tools
Once, 20 years ago or so, I showed up at a tire dealer and couldn't find my wheel lock "key". Installer said, no sweat, they're trivial to get off. Sure enough, I watched him try a couple twelve-point sockets, found one that was the right size, took a hammer a lightly tapped it onto the lock, then took a 1/2" air-impact and leaned into it, and it came right off.
Now, the size of the lock heads compared to the inner diameter of the recessed lugnut wells might make this method difficult if not impossible, but 12-volt impact wrenches are available and might do the job.
I agree, though, that the market for Viper wheels is currently only limited to Viper owners, as far as I know.

Doesn't mean a clueless thief wouldn't find this out until after he swiped them (and, most thieves aren't exactly Einsteins).