A4Q: limited slip??

[John Legelis <jlegelis@fmrco.com>]

Since the owner's manual completely ignores the technical details of the
Quattro system, I'm wondering if someone knows whether the front and/or
rear diffs on my A4Q are of the traditional 'limited slip' type? 
Granted, the EDL creates a sort of 'virtual limited slip' up to 40km/h,
but do the f&r diffs limit slip in typical mechanical fashion at higher
speeds.  Or perhaps limited slip and AWD don't mix?  Comments?

p.s. Is their a FAQ on this?