Damn, I thought I had it pretty well logic'd out, that stings. If that is the prevailing wisdom, though, there's probably something to it and I'll reconsider.
I do have a second car gun that is much more secure and well-hidden for if I'm ever stranded camping or roadside, an old beater Glock 23 with a concealment holster. I have that in a steel lockbox secured under the floor in the back (spare tire well in a Subaru Outback) with an anti-cut cable attached to the spare tire frame. Is that acceptable, or is this just a universal "no way" situation.