Armed, professional, and highly trained law enforcement officers have little in common with with armed, unpredictable, and indifferently trained or completely untrained, non-uniformed citizens wearing pistols around town just in case.

I'm happy that you scared away your assailant. There's one incident right there.

But my question was, How often does this happen? And how does the number of such occurrences compare with 10,000 annual gun homicides?

The answer appears to be, Who knows?

Whether responsible people like Supreme Court justices carry concealed weapons has no connection to keeping guns away from criminals and unstable people who have no business running around armed.