Ossage
I agree with your point on being able to fire the Stan by tipping your hand purposely but it will be the ugliest miss you have ever seen. When I had target panic and went to the Stan it only took two of those huge misses do discourage me from ever doing it again. However with a trigger I could get away with punching it and not always have a bad result because just moving my trigger finger didnt upset my form as bad as having to move my whole hand or arm. There is more incentive to cure something you KNOW is going to produce a negative result than something you often get away with.