Justin,
I'm confused. Is the vip211z receiver in the RV now? Are you wanting to replace it or? The 211 has a coax sat in, a coax TV out,HDMI out, an RCA RWY and RBG outputs so you should have enough outputs to drive both TVs. An older receiver should also work if the satellite service (Dish, Direct TV, etc,) still supports it and the card is still good. You will probably lose the HD (HDMI) capability bu t if you are looking for an in motion setup you lose it anyway. I have a KVH dome on my coach. We don't use the in-motion capability but I tried it as an experiment and it seemed to worked fine. It certainly acquires the signal much faster that a Winegard dome I had previously.
Steve