Yes I am still using those deflectors and they are still attached just fine from the day I put them on, well except the front driver side one, because I initially installed it incorrectly, so when I moved the window up, it broke a little piece that touches the bottom on the door, and now occasionally I find only that one deflector comes loose and slides down, not sure it is because it is broken, or because that door gets opened and closed all day every day, but anyway I just push it back and it is as good as new for the next few month. I also have kind of a habit now of pushing that one deflector up every few days, just in case it is trying to slide down, but it stays up.
One thing to note, these will come with only two or three metal clips that hold each of those deflectors, those were not sufficient in my personal opinion, especially the very long ones up front, and from the very initial install I actually ordered another set of those clips, and so instead of two or three of those clips holding the deflector, I have four or five of them holding them. It also a good idea to add more double sticky tape wherever you can, so they will stay more secure in the first place.
Just be warned, at the high speeds these will make some extra noise from all the wind hitting them. As far as scratches goes on the windows, are you worrying about the window rubbing on those metal clips? I do not see any scratches or issues, because those clips are not shaped like this | | but more like / \ so they are not rubbing on the windows much.
As far as stickers go, they are not stickers, but an engraving and then some white paint print over those engravings, and one one or two of those deflectors the paint does not align with engraving haha so I get a ghosted double print, but it does not bothers me. I can probably take a few pictures of the installation tomorrow on the passenger side and maybe the wrong installation one on the driver side that broke, and a ghosted logo image.

 

Alright, I almost forgot to take all the pictures today, but I did it hooray haha
Here you go - the misaligned engraving, it is on two of my deflectors, and it is only in TEAM



Next one is for the deflector on the passenger side that is installed correctly, and you can see that the deflector goes in-between two rubber seals, so whenever the window goes up, it slides on that seal and not touches the deflector.



Now, for the deflector on the driver side, I installed it inside the window where the glass slides, so when I was rising the glass, the deflector was on its way and the glass pushed that deflector till it broke So when you will be installing them, stick the end in between the seals and away from the glass.