As far as I understand though, we can only establish something as “not goyish” as opposed to “Jewish”. True, being made by a Jew does not make something inherently “Jewish”, but it does remove it from –Necessarily– being goyish.
Like I was saying to pacman, there isn’t anything making jeans “goyish” any more than commonly accepted articles of clothing such as wigs, certain tops, and as others pointed out borsalinos, the suit, and ties. etc.