No magnet, electro or permanent, is going to attract a solid brass object. That doesn't mean there couldn't be a hidden magnet, or a peice of steel inside a brass bob.
While I don't think it could be easily faked, it's not impossible. Like good conspiracy theorists, the mere possibility is proof to the FE side. For the rest of us skeptics, more is needed. Like I suggested a few pages ago, I invite any doubters to visit a public Foucault pendulum and bring your EMF meter along. Shouldn't be hard to confirm a fake using magnets this way.
To the chicken hearts who fear the men in black throwing them out, I say video record the whole event.
Jroa, are you arguing that Foucault pendulums do work as advertised, only not due to Earth's rotation, or that they are all faked?