DePaul's source of income

I don't believe they ever talked about what Vince and Nicole DePaul do for living. They live very well, their house is tastefully decorated, has high end furniture, paintings etc. My guess is they are both (or at least one of them) a successful professionals. I do remember seeing a well equipped office that Vince was using. Does anyone know? PS: What an awesome couple and they have raised such a great daughter Mackenzie!!