Many people with the AT&T GS7E have successfully flashed the PEH ROM (the T-Mobile version) and have their phones working just fine. I don't know if it is true for the Sprint G935P GS7 Edge phones. I'm gonna give it a go later this week once I have everything backed up first.
If the flash works, it will be awesome as it will be Sprint bloatware-free and the phone should offer better performance and battery life.