This was very helpful, thanks. The UI and flexibility (and effectiveness) of ARC is truly amazing.You can take one set of measurements across all the speakers in your setup and use them across the four profiles.
While I currently have ARC disabled when I used it I have a home theater and stereo profile but both are based on the same measurement run.
One note, the only way to have a true analog path is is to select "no" in the input set up menu for the convert analog setting. In the past I've always used a pure analog path from my Gustard X16 for 2CH music, however, with ARC limited to 500Hz and converting the signal to digital I may be a convert myself.... I also added a 2.2 channel profile that I plan on playing with this afternoon. All is to say, the Anthem, is a pleasure to use and performance (including SQ) is excellent.