I certainly come down on the side of "do the least you have to, but do whatever you NEED to." I travel constantly. I can't factor in where my feet happen to be when someone decides to try to attack me. Quick Stop in Alabama, 5th Ave in Manhattan or the base of the Eiffel tower.... I'll use the skills/tools at my disposal to defend myself if I need to. The same goes for being in a grocery store, parking lot, bank or school in the town I grew up in.
Of course, I feel the same way in the opposite direction as well. For example, many people spout off about how Castle Doctrine Laws mean that they "can" shoot someone inside their own home... AFAIAC, there is still a requirement that you NEED to shoot that person because you are protecting yourself or others, regardless of the law.
-RJP