I have the Slingbox SOLO and now the M1 connected in my home office. Originally connected to a Cox cable non-HD DVR, now using a DirecTV wireless Genie Mini (C41W) and NO TV... I watch it on a regular basis remotely and on my notebook in the living room when someone else is using the big screen.
Works great. Chromecast support is a bit flaky though, hopefully that gets ironed out soon