I do not believe either are Antisemitic at heart nor in their intellects.
If there is any kind of anti-Semitic turn that Q takes, he/they will almost instantaneously discredit himself/themselves, at least in my mind.
It's fine to be critical of Israel's policies in a specific area—even Zionism—and it's fine to be critical of certain wealthy billionaires, etc. that happen to be Jewish, but as soon as it turns to broad-brushing and/or sounds like Farrakhan, Spencer, etc. then it becomes totally illegitimate and anti-Semitic.
So whatever the Q crowd has to say about Israel and Jews, etc., they's better be damn careful not to indulge any of that kind of crap, because they'll lose almost all their support in a heartbeat. It's a slippery slope, and rightly so...