We are also long time Dish customers and bought a vip211k/Tailgater for the RV.
I can only speak for the Tailgater. Works great with the vip211k. Automatically finds the sats and has signal within 10 minutes or so.
It believe it only searches for the western satellites. Don't know if that is a problem as you go too far east or not.
The vip211k is a single channel receiver so you can only get one station at a time. But you can send the SD signal to a second TV via coax.
I call Dish each time we are outside our home area and have them change the service address so we can get local (to that area) network channels. However since the RV receiver is part of our home Dish package, changing the service address means the home receiver will not pick up home locals until we change the service address back to our home. Not a problem as long as the DW is along. But if for any reason she stayed at home she would not be pleased if I disabled her local channels.