With apologies...

To Mr. C. form WTKR: I hereby apologize for being clueless myself and causing insult. However, what you plan to do is a bad idea in that it is a legal "gray" area in that it gives the impression that you've actually accessed the homeowner's network. It's why both Rob and I were uncomfortable each time it was mentioned. (Based on our training, it's considered unethical and can lead to a number of legal issues.)

A much better approach would be to ask Rob to set up a demonstration network to show what can be done (e.g., mirroring a user's web surfing, intercepting a VoIP call, etc.). The main point is that all parties must agree to the monitoring/interception. Otherwise, it's very likely to be illegal.