I have enjoyed seeing the dialogue on this topic. Marty replied to my inquiry about "human/humanoid" targets...and I quote "As long as you are participating in training which is simliar to police training, you should be good to go. For what it is worth, at my school, Firearms Academy of Seattle, we use them a lot."
The take home lesson of this topic I feel is that we civilians (or even LEOs) need to keep in mind the potential for any area of our lives to be brought into play if involved in a self-defense shooting. In short, everything will likely but put under the microscope whether in our OPINION it may or may not be a "big deal". Always, always, always keep in mind who the triers of the facts will be....a jury of your "peers" (of which you may get to testify) or a Grand Jury (in which typically testimony not allowed on your behalf). CYA..."Can you articulate" is a term Ayoob presents. Be able to give a logical reason for what you do, did, or would do.