Curiosity: You completely missed the point, either intentionally or unintentionally, of that gemora in Sanhedrin. The gemora clearly demonstrates that yidden have a unique yiddishe way of dress. And that unique yiddishe style of dress can go down to being as specific as a shoelace color. Now the gemora then goes on to say that during a shas shmad if the goyim threaten your life if you don’t stop wearing “the Jewish shoelace color” then you are obligated to be prepared to die rather than change from wearing the Jewish shoelace color. But that doesn’t change the gemora’s starting basis that even during normal times (with no shas shmad) there can be such a thing as a specific shoelace color that is “The Jewish” form of dress.
Oh, and great point you made associating a nazir with a chup.