John Sickels did an analysis on Lou Montanez. 

What does the future hold? Montanez turns 27 in December, so he is at his peak now. Although he hit well for the Orioles, I do not like his 4/20 BB/K ratio in 112 at-bats. The strikeouts are not out of bounds, but the walk rate is too low, and major league pitchers will take advantage of his lack of patience eventually. He's never hit that well in Triple-A, and I'd like to see more data from Triple-A and the majors before concluding that he's really truly turned a corner.

In other words, what he did this year was obviously impressive, but I'm not ready to say you should invest a lot of hope or resources in Montanez stock.

Last line of Sickels' analysis says it all.  At best, maybe Lou could be a useful bench player, but let's not kid ourselves into thinking that he could a good regular player much less a high caliber, late bloomer like Luis Gonzalez or Melvin Mora.