Just for your info,
This lineage: Sifu Desargos who learned from Sifu Puyot, who learned from Stephen laurette who learned from Chiu Leun, Lee Kam Wing and myself.
Here in the New York group Chiu leun, Myself, Stephen Laurette all know and practice Hung Kuen. In my school I teach both Mantis and Hung Kuen still to those that want to learn them. So no harm in learning it. However, Size doesn't really matter in mantis style. Its an old (and wrong) notion that mantis is for small or skinny guys. I am 6' 240lbs, 52 years old and have no prob with speed or technique or endurance. I don't know if that really answers your queston but the point is that many people practice more than one style.
http://www.7starmantis.com