MT in my opinion is probably one of the better Arts/Sport for self-defense. It seems like WC and most other Chinese arts focus on a certain flow, which only really works when you're fighting another of the same style. If you get good at MT and learn how to just punch some one in the face good and hard twice and fallow up with a good round house to the head, I bet no one will mess with you. If you think about it sporting styles (not sure what to call them but boxing and mt etc...) are more practical and efficient for hitting people because that's what you do all the time, hit people.
If in doubt put your toe in some punks ear and see how much more fight he has in him.