Interesting. Never heard about any wing chun system that was combined with any of the big three internal arts like Tai chi, Hsing I, or Paqua.
I've always liked the directness of Hsing I personally. There was a bit of time when I probably could have studied it here in San Antonio, but the gentleman that taught it left not too long after he got to town.
"I don't know if anyone is known with the art of "sitting on your couch" here, but in my eyes it is also to be a martial art.
It is the art of avoiding dangerous situations. It helps you to avoid a dangerous situation by not actually being there. So lets say there is a dangerous situation going on somewhere other than your couch. You are safely seated on your couch so you have in a nutshell "difused" the situation."