Moca and Cable Amplifier

I currently have a Tivo HD and am getting ready to move up to the Tivo Roamio along with the Tivo Mini. I am looking into the networking options that I have. I know the Roamio has Moca built in and that's what is recommended; however, I have a cable amplifier that is used right before going into the Tivo. This was installed by the cable company and necessary as there are weak signal issues. So I cannot remove it. I have read that you cannot use Moca with a cable amplifier. Is this true????



If I cannot use Moca, would getting a very good powerline ethernet adapter a good and realistic option?