They're in the same quarter as some of the best doubles teams around so I think they'd be tested - or are they the ones who are gonna be testing?
Lets' see - Knowles/Nestor are big servers, too. Then if they get through that they'll face Bhupati/Mirnyi - a tougher pair. If they go deeper in the draw, there's Bjorman/Woodbridge. Should be very interesting to see.