"...Punks : After being sprayed, if he or she grab and wrestle you, you will be in contact with the stuff..."

Indeed you will. I have seen some badguys laugh at mace/pepperspray, but I KNOW it works on me. Nowdays I would go for a Taser. PR-24 to the side of the knee works too, but they are kinda hard to carry around, and illegal in many places except for LEO's...