Could be since although it's been "kicking around" for a while, you need to be 7.18+ and he said he is 7.19. Never really tested it in full myself, but it has been implied to me that anything that can leverage IV&D (or Enhanced Data or HPD for that matter) can be routed through modem tethering. If you are getting into that, programming would be a little more time consuming depending on what features are being used (AMS, ARL, OTAP, OTAR, etc) since you would have to have intimate knowledge of the network design and topology between IV&D, your mobile broadband, and the various components whether it be IMW, KMF, RM Server, etc. Point being you would have to make sure the packets can make it from whatever is hosting the service and the subscribers. Again, this is why leaning on the STs (or appropriate channel partner contacts if that is the route they are using) is important.