I agree that armed citizens or license holders need to know or learn the use of force laws, but to me the best "less lethal" choice is to not get into a confrontation at all.
You can tote OC spray or a C2 Taser but I would not engage a subject unless it required lethal force or a display of deadly force.
Keep in mind, the recent incident where a soccer ref, punched only one time,
died from his injuries.
I'm not going to roll around playing Walker Texas Ranger with some street thug.