He was advertised as lengthy and talented. The primary weakness of Boston this year is the lack of a consistent 6th man (primarily offensively, though a 6th man doesn't necessarily have to be a scorer, he just needs to be very consistent in his role).
I would give Giddens a real shot - he's 23 or so, not 19, so should have SOME level of maturity right off the bat. Either he's going to contribute, or he'll be gone, but it's time to test the theory of his potential with some reality minutes. So here are my drastic changes to the bench over the next 10-15 games, and if they don't work, DA and Doc still have nearly 1/2 the season to solve it.
1) Giddens as 6th man.
2) TA as 7th man, where he belongs. He currently has too much responsibility and expectation for his low offense IQ.
3) Pruitt as the 8th man and backup point. About 12 minutes per game - Rondo should be perfectly capable at 36 minutes per game.
4) POB as 9th man, and as primary 5 off the bench. See 1). It is time to see what he can do.
5) Powe still getting 12-18 minutes per game.
6) House and Big Baby with significantly reduced playing time. House is a spot, situational player, who is in way over his head in terms of expectations. Occasionally fantastic in big spots, but not a 15-20 minutes per game player.
Remember how effective Stuckey was in a major role last year.
It can happen.
As an aside, it is amazing to see Posey shooting over 50% this far into the season. He's averaging 10 points per game, and playing only 3 more minutes per game than last year. Is it still legal to lament a bit?