interesting, I never had any problem with my Salomon bindings but I bought some Raidens this season and noticed that some of the inside binding had peeled away. I thought it was an issue with the binding (plastic/fabric too thin) but loved them so didn't worry bout it. I will check and see if it is where the loophole is when I get home.
Edit- does not appear to be from the hook but from general rubbing. I will have to get a glue that will help protect the thin covering on the binding.
Oh and those 'circular things' were what had rubbed/worn the stitching on my outer tongue. I will make sure if they get bent next time I Shoe Goo them smooth.