I don’t think the codecs you speak of have necessarily to do with workflow and output but more to do with aquisition.
I’m posting an HD show due to air next march for the Outdoor Channel HD and they specifically say that very little HDV should be used. DVCPRO-HD, HDCAM and XDCAM-HD are all approved for aquisition though and a little HDV for B-roll.
I myself have sent out countless numbers of BetaSP broadcast tv spots using prores since fcp 6 came out. Nobody is complaining. 🙂