I just can't get my head around the appeal of the crossrack. Maybe I'd need to use one to understand, but I'd rather use a conventional saddlebag with a QR bagman. The crossrack just looks so ungainly. I think it's the size of the cantilever from seatpost to bag... That and you need to have the load pretty high to not interefere with the fold on a lot of bikes.

Anyway, people that have 'em seem to love 'em.