Shields are easy to put on.
They are just big magnets.
It gets easier with practice.
Just need to tape them up after you put them on and make sure you can open your doors
One small annoyance is making sure the shields lay flat before and after usage or they are a pain to stick. With heat, they will flatten out quickly though.
H2Daddy has said before, tape is cheap---apply generously!
I do have scratches on my vehicle, but they are where the shields are not. For a small investment ($450 & time), you can keep your doors scratch free for the most part.
I guess it is all in how you perceive scratches.
They also help protect when rocks are flung up on the sides from going through mud or gravel roads on the way to a trail or the trail itself.
Anyways, nice pictures.