Hehe Jack and Fabs, I know it isn't far fetched, I know a guy who did it. Eventually when i can build the place I want too, I fully intend to do something along those lines, but it won't be anytime soon :/
I have another friend who liked his new "saferoom" for tornados so much, he had another put into his Barn/garage, and he uses it as his gunsafe/security vault.
That's actually what reminded me of it, caus ei asked him about it and he always says his regular gunsafe is always "too small".