I'm doing it in one of my dynasty leagues. Maroney has done nothing so far, and until he does, if you don't have any better players, it's not a horrible idea to start both. Morris has done better so far, but Maroney could go off at any time.
As a side note, that team is 0-3 and in second to last place, so it isn't necessarily a winning strategy.
Kudos to Leber
for the amazing sig and to Metroid
for the userbar and making them both fit
2008 and 2009 Defunct Dynasty League Champion