Sorry to tell you, Colonel/Captain, but you can ask a lot of reservists who have been busted by UCMJ for things they have done while not on duty, and I am sure they would disagree.
I know of none, because there is no jurisdiction, as the above citations show quite clearly. I know some who while on liberty during a drill weekend violated the UCMJ and were busted for it, but they were in a duty status then, and I have known some who were on active duty for training and violated an act of the UCMJ and were charged and tried. The only consequence I have seen of violation of civil law of duty is that some have been taken before an administrative board to review their fitness to remain in military service, were found unfit, and were discharged.