Not a total waste of money. A good antenna for the DirecTV (101) satellite which "currently" broadcasts the duplicate SD channels. It's unlikely that DTV will give up the best orbital slot for US customers and it's unlikely that DTV will change to something other than the current KU band broadcast (read.....all new antennas required for EVERY DTV customer) so now the question is what is going to happen to the 101 KU band broadcast.
If you only get 2 years use from the antenna you will still have had 2 good years of watching satellite TV.