I wonder if they'll run along the wall to the back of the house? Our (currently unused) copper comes to the front corner of the house and drops down to come through to the Master socket, but I don't want their modem sitting in the hall (it'd be on view and I'd have to channel the wall for an Ethernet cable), when my ADSL extension used to and now the Virgin cable does run under the house to my dedicated server cupboard, where my modem, router, switch, server, DECT base-station and UPS are.
I could play the disabilty card (my wife is disabled) and push them to get it to the back, so as to allow for use of the UPS, ensuring that she is not left without the "landline" if power goes out.