Stratus, good thoughtful post! I guess I would find the second scenerio more interesting if you had 4 or 5 assailants. Do you still take action? Assuming all are armed with knifes (and maybe more), do you still take action. Even with a handgun, you may be unable to control/manage all the attackers. You may be likely to be injured or killed in engaging them. Do you still yell? Or, are you better off retreating to a safe place and hopping on 911 to ensure help arrives.
Play hard, shoot often, leave well worn guns!