I honestly don't know how that would work, most DJs I know change the EQ's throughout the mix. It's not like EQing is the hard part of mixing anyway.....

Maybe pre-beatmatched. But if that's the case, I can kind of understand because that would free him up to do more artistic things with the loops, and allow for fasting mixing and blending of loops.

Though he shouldn't need to do that, unless its insurance for when he get plastered or something...