You can sideload the Game Pass app onto a Shield and it works ok. The bitrate is pretty low though, games tend to get super pixelated when you move the camera around.
Thank you. Question about it. If I pay for this xcloud game pass service ($15/month?) for 3-4 months and cancel, does MS still keep the save of the games on the cloud for me? I only had a Xbox live account back in the 360 days so I will need a new login.