I really wouldn't call it "home networking" as that implies you might be able to hook it up to a computer (you can't)... It is called, simply, "multi-room".
Essentially all it does is share content and function of a single (or possibly more) PVR in your home.
Ie. You would buy one DCX3400 for your home and then buy multiple basic boxes (so long as they have MoCA) for other rooms. Each of the basic boxes will then act as if they are PVRs, being able to schedule and play recordings on/from the DCX3400.
You will have to wait to see what, if any, basic MoCA boxes Shaw deploys (could be a while, if at all)...