Staples have not been approved by Dish Network for years. I personally preferred using them when doing apartment installations. They left smaller holes when attaching cabling to baseboards and around doorways. That left the tenants less likely to forfeit some of their deposit with all the screw-in clips attached all over the place. Dish Network put nail-in clips on the unapproved list a couple of years ago. Their reason was that some 'untrained' techs were missing the clips and smashing the cable. That this would somehow cause grave damage to the system. I say making the receivers in China causes grave damage to the system, but that's neither here nor there. And besides, if smashing the cable with an errant hammer, or distorting the cable a couple of times using a staple was so bad, then why are we still using flat cables? Don't they get smashed in windows and sliding doors and the systems still work fine?
Leave it up the Dish Network to find out what makes a technician's job easier, and find a way to put it on the unapproved list. In the past, I could attach 75' of cable to a brick wall with nail-in clips in just a few minutes. Now it takes 20+ minutes drilling holes, inserting plastic anchors, changing drill bits to nut drivers, and screwing in the screw-in clips.