Hello,
I was just wondering if its possible to be able to get knifes & gun skins to use in comp, That will only be visible to me. ect
@TrioAU answered your question already, however skinchanger hasn't been updated in a while and probably won't be. So no, until someone decides to create a new one, or Flo does a new update, you won't be able to change your skins client side.