pros and cons. A dot gets on a witness statement, if it goes that way after the fact. It shows a clear intent to all, step by step. Also a laser across the face or on your chest is a superb reminder to an angry person that they could reconsider.

Also tend to be smaller and less obtrusive.

Pro's to a torch, but i think thats better for offense, or possibly home invasion where access is less of a factor, and the light adds advantage in movement through a dark space. These are sweeping generalizations.