Last I heard about a friend trying these out on his FD he had some issues with the thickness of the leather around the bottom of the door making it rub on the sill (sp?) like the guard that everyone replaces with CF RX-7 ones. Due to them rubbing it started to tear at the leather, and was quickly getting worn and pulling the 'leather' from the rest of the panel due to the catching/friction caused by closing the door.
Maybe they've changed and gotten better! Because this was like 3 years ago, but from the same seller I believe, because they look identical.