Cullpepper "might" be a fit as a backup in this system, but one would think that he's looking for a starting job and would be more likely to sign where he has a decent chance of at least unseating the starting QB.
Way back when the Brees vs Culpepper trade talks went on, I thought Culpepper (on paper) was a better fit for the Saints (comparing to the Brooks era and our style of play), but I hoped for Brees as he is more a field general. This because it is important to be able to read defenses. Culpeper can not do that on a consistant basis. His career without Moss has been neglible - so in other words he is a "WR dependent QB". Without a Smith, Moss or TO Culpepper will not make it in the NFL.
I say pass.