Phil has shown in exactly which rooms of his house all of the more expensive items are located. Speaking strictly hypothetically, a person would only need to be in there for a few minutes in order to clear the place out. His address is very common knowledge, and the gates at the end of his street are somewhat of a deterrent, but as evidenced the smaller one can easily be hopped over.
Thus whether subconsciously or in a desperate attempt to prove his own manhood, self-defense measures for where he lives are in order.
I'd choose a 12-gauge shotgun over a Dragon Age sword.