Just how good is the Sling Adapter for long distance viewing? I am thinking about it for watching my DVR programs at work on the weekends. I would be using my smartphone as a tether to my laptop. I don't care that much about the quality of signal as much as getting a decent picture. It would not have to HD but a good SD would be fine. This way I won't have to burn DVDs at home and view them on a player. So anyone try this approach? Thanks