I edited HVX footage with PPro 2.0, using the Raylight plug-in.
Everything went smoothly . . . I was able to access the .mxf files(from 3 cameras recording to Firestores)directly without any type of conversion. The most important thing is to make sure that your project settings match the settings used on the camera.
The only issue I ever had was that periodically I would get a message when trying to load a clip into the source window and it would say that the Raylight plug-in was not loaded. Closing and re-opening Premiere would take care of it . . . not sure what was causing it, though.