Drupal 5 to 6 conversion; experience with deadwood

Hey folks,

I have a client who wanted me to tell him how long it would take to convert a custom module in his site from 5 to 6, should he decide that the time has come. I've been working in 6, but have only done modest conversion so far.

I ran deadwood on it (drupal.org/project/deadwood) and it gave a rather long listing of TODO items that it couldn't convert, but none of them look particularly onerous. It gives the impression that converting this rather long and complicated module might not be such a big deal.

So I'm wondering if others have experience with deadwood. Does it miss much of anything? How many problems come up with its own conversions.

Thanks