Thnaks Roll. To indulge our bike geekness even further...take a manufacturer like Specialized and compare their stack/reach geo charts between their road and cross bikes...say the Crux or Tri-Cross verus Tarmac and Roubaix. You will see stack equivalency between the two with the Cross bike having a much shorter head tube. Because some if not most cross bikes have a shorter top tube, if you want an equivalent fit for a cross bike, I would consider sizing up for say the Crux model. Sizing up on a cross bike with slightly shorter top tubes...many times creates a similar fit to a comfort geometry like a Roubaix.