I have seen it in action, it works well. If you go to an Apartment that doesn't have it available, maybe mention to the customer to talk to the Landlord about it.
I believe that in almost all apartment buildings the apartment owns the camera, so there won't be an issue there.
Shaw may own the digital encoding equipment, to allow customers to use the 700 / 900 digital channel on their digital boxes, but that is usually seperate from the camera.
That is ultimately what MTS is doing, installing a device that sends the lobby camera BACK TO MTS as a digital stream, and then the stream can be watched by the customer that is in the apartment.