Sams getting snaps at WR spot would be valid if we weren't decently talented and deep already at the position. Keep in mind when Klein played WR in 09 we had Banks and Snipes at WR, but not much after those two.
I think we make Sams a full time QB and try to get him ready for 2013, unless of course his talent makes it clear that he can compete with Klein next year. Put in a couple packages to get him in next year, but Klein is likely the full time guy at the QB spot.