I think survival preparation needs to be more fitness oriented than attack/defense. Having the cardiovascular ability to walk home 15 miles seems more important than a proper arm bar. Having some muscularity to protect your body from an impact more than having a tight shot group at 25 yards.

Though writing this I wonder if my chances of some drunk challenging me might be greater than the chances a natural disaster or grid reducing event.

I think I still believe the mind and body be prepared before we add gear or technique.