Yes this is a great strategy if you have the moves for it, especially against gym leaders as their teams very much utilize their fields. the same should be true for most of hardcore at least. alternatively, you can temporarily override any field with one of the terrain moves, which is pretty damn cheesy in my opinion but it works. another option in certain cases is to use the field as well of better than the opponent, such as one of my fondest battle memories from my reborn run: sweeping the fire gym with eruption. Full HP+STAB+Flash Fire+Field Boost just minced them. might've had sun up near the end too.
Edit: thought you Just meant using the inbuilt potential changes of each field. having a reliable way to override a field and then permanently transform it into something even more favorable sounds even stronger, and should neuter almost any tough fight that uses field well.