Yes, you flash it the exact same way. Treat it as a DM500S and a DM500C.
You can have, for example, the NabiloSat image on the sat side and the D image on the cable side. Or Gemini or PLi or etc. etc. etc.
All images are generally the same unless you want to do weird and wondering things with it. They all support a cam via a download panel (if your box is connected to the net) and they will all give you channels.