Just to clarify the on screen info issue - HDMI from the Oppo to the TV will carry video only, including onscreen info from the Oppo.
Where you loose is onscreen info from the Anthem. To get it, you need to run a separate video cable (of any quality) from the Anthem to the TV. Then you just have to switch inputs to see the Anthem info. (which is only really relevant when setting up).
Just means switching inputs on the TV to watch TV and movies, rather than routing everything through the Anthem and having only one input on the TV. Many argue multi-channel carries a better audio signal than HDMI anyway. Again, just a convenience issue.
Where you loose is onscreen info from the Anthem. To get it, you need to run a separate video cable (of any quality) from the Anthem to the TV. Then you just have to switch inputs to see the Anthem info. (which is only really relevant when setting up).
Just means switching inputs on the TV to watch TV and movies, rather than routing everything through the Anthem and having only one input on the TV. Many argue multi-channel carries a better audio signal than HDMI anyway. Again, just a convenience issue.