I recently spoke to a Clearaudio rep about this very topic... He said that as long as your TT is level (use a bubble leveler to make it so), anti-skate is not only worthless, but can actually harm both stylus and record
Clearly, that Clearaudio rep is not an engineer and knows nothing about physics. He should not be speaking on behalf of a company that designs a tonearm with anti-skating adjustment.
Just my 2 cents.