It depends on whether they are part of a group like Wiccan or an Eclectic Solitary Witch like myself. I go undetected. I consider myself a witch due to psychic abilities and a knowing on how to cure...
Most likely wearing a Blair witch symbol means you're a fan of the movie or you think it looks cool. Some websites claim the symbol is an obscure charm used by occultists and alchemists, others claim...
The spelling "wich" is not a word, so I'm afraid your riddle makes no sense, even as a riddle. The only correct spellings are "which" as in "which one", and "witch".