I agree, the bottle opener is the "tool" if you are going to remove them. Scratching it isn't the biggest concern it's buckling or denting it. Extreme care must be taken to not try to remove it before the entire bottom lip is loosened. And the bottle opener when pulling the bottom lip off is being pushed against the side of the moulding and can very easily dent it. Again, getting the whole thing gently loose is the trick.
This is why I suggest to think about it before you decide if you are even going to pull them off. Just think about it good and read and watch videos you can find before you do it.