We did this. Other than a major learning curve and the Dish guide seems to say every program is New we are happy we made the switch.
We have had to change our zipcode several times and each time this went smoothly. No need to jump through the hoops we had to do with Directv and their untrained personnel.
Overall we are happy we made the switch. Plus it costs less.
We initially had a problem with the package we wanted when we called. Someone told us to go to a local supplier which we did. They understood what we wanted as an RVer and we were all set up. The CSC told us we couldn't do what we wanted as an RVer. I forget the details but it was something to do with our being RVers