well it only depends on your look, if you are not a Jew-at-first-sight as you say, you don't have to worry about anything, actualy the antisemitism in Poland is pretty overestimated as I might say, at the moment it is mostly used in politics and media, to gain whatever, normal people on the streets are more tolerant then you may think, of course, if you were wearing your traditional clothes and hairstyle you would be stared, pointed out, and maybe even mugged, but that also depends on the city
bottom line: if you don't look like a Jew, you won't be treated as one
bottom line: if you don't look like a Jew, you won't be treated as one