Just my opinion, but I feel that in order to consider point shooting good, one would have to reliably hit the "A" Zone of a silhouette or something of similar size on a regular basis on the first shot from a holster from a given distance. If you can do this at all, then you need to determine just how far away you can do this. Then you know that shots beyond this distance require more careful aim with sights.
I have fired without sights, or "shot from the hip" and was able to walk my shots onto a target, but if I had time to walk the shots in, I had time to use the sights. By the same token, in a self-defense senario, odds are you are not going to be able to walk your shots on target. You probably won't even be able to see them and again, if you don't hit the first couple times and are not out of the fight, you had time to use the sights.