Sky Glass is a closed ecosystem and Sky aren't about to make watching your own media easy, that's how they make money, so unless they are forced to, or they can make a revenue stream from it, they won't release a native app. That leaves running it on a different device, generally the lower end looks like either a Roku or FireTV, Roku is basic and closed, FTV - even the Pro 4K end - seems to have memory issues and requires more reboots than I would expect at this point, but much more open ecosystem, CEC is supported and that makes it 'easy' to integrate with one remote. AppleTV & Nvidia Shield are your higher end options, again CEC is your friend, I disliked Nvidia bringing adds to my home screen and messing about with replacement launchers is not what I signed up for, and the 1st/2nd gen remotes suck, so appleTV took over.
