I'm not familiar with Reporting Services, so I can't comment on the merits; however, if you are using it successfully then I would be interested in your experience.

One aspect of this solution is that it is designed to fit the small screen real estate of the target device ( specifically the blackberry, but could be tweaked for any ). If you are dealing with devices with larger screen real estate, you could increase the columns, or cut the number of columns for smaller screen devices ( older style verizon phones, text messaging, pagers, etc. )