As soon as twctv becomes an app on Apple TV it's goodbye ruko
Which is exactly why I WANT the TWC app on TVos. I do like my Roku, but I stream my video/music library through my house. Thats several TB of movies and video ready with the press of a button. If I had the TWC app on my Apple TV, I wouldn't need the ROKU. Which is what I want. One less device. I really, REALLY want this app to happen on TVos...
You are able to stream the TWC TV app to the Apple TV through Airplay from the iPhone or iPad. It seems to work ok for on-demand, does not work for live TV.
Just a follow up, it works on live tv for me too. I have the newest version of apple tv also but airplay does not work on that one. I hope this info helps.