i toyed around with it before the LSAT.
I think it only helps people the most who have existing problems reading.
I mean, to provide a benchmark, I scored around a 760 verbal on my SAT adminstration and on my LSAT, I believe I missed around 3 questions total on my reading comp (or whatever it was called) section.
I can't say eyeq helped terribly. It forces you to learn to scan text fast, but its only beneficial to those people who like reading things over two to three times.