except ...
1) At $299, the Q would make for a pretty expensive HDMI cable
2) That's actually not what the Q is for. It does not stream content from your phone/tablet ... at all. Sorry.
While I was being facetious (oops, It's raistlin!), it's the same end result. Actually a little more convenient since the initial user who set up the stream can leave, and the device can still benefit.