You know what I remember doing this when I was watching a season of True Blood a while ago. I haven't tried yet with the latest iPad and app version. But, it did work with the video/HDMI adapter. I only wish it would work with Airplay. So far, it only transmits the sound, not the video. I've yet to try the HDMI adapter. Though, I will soon. If it doesn't work, I will be canceling my HBO subscription. This was the only reason I subscribed and I can't imagine watching entire series on my iPad.I tried using TV Out but that doesn't work. I get a message saying HBO not supporting HDMI. Does Displayout work? I wanted to know before I bought it.
As I stated in my post, I was comparing the Roku to a "really long HDMI" cable. I got one of the latter from Monoprice, it was 30 feet, and it cost $25.Unless you get them from Monoprice.