Even as the armed individual remains the key to self and community defense, sophisticated societies inevitably develop specialization. It seems likely that even Libertopia would end up with a professional class of protectors, bounty hunters, or armed “insurance agents” (ala L. Neil Smith’s North American Confederacy).
Which brings us to the ancient dilemma, “Quis custodiet ipsos custodes?”
Third question: In this or any other society, is it possible to ensure that armed, organized enforcers respect the rights of individuals and hold themselves to the fundamental rules of civil society? If so, what would put such a check on their behavior and prevent them from becoming tyrannical brutes serving powerful special interests?