If it adds value to my knowledge, skills and training base, yes. RJM's sessions are a perfect example. Time and points are just two variables among many. I am not aware of force on force or simulator training that is timed (although I guess you could do it and some people may do it), and there are lots of ways to fail besides going slow and having less than perfect hits. Real life often involves going slow, dialogue, communications equipment, tactics, shooting skill and working with others.
As for not scoring, I would hope that a participant at least gets to determine if the threat was neutralized.
I also know that it takes a lot of time and effort to formulate stages properly and to set them up and take them down, so the cost is worth it.
