i used to have it on and off, there never any problems having it switched on or taken off as long as your dish is there. I even had it once where all i got was premium movie channels and didn't have to bother with that other crap. so it's very customizable
the quality is 2x's better than cable in picture and sound. plus it's cheaper. i only had the signal lost once and that was during a very very windy thunderstorm, the signal never went out during normal or even heavy storms. My cable used to go out all the time with those bastads working on the cable lines and other problems.
Dish is so much better in every way possible. don't believe those commercials by the cable cos about dish sucking because it doesn't