I finally finished it and I'm sure I spent over ten hours on it, including smoke breaks and eating and getting beer and stuff. I'm not sure how to find out what the 'absolute' game time was. The length and quality was definitely worth the money.
I know all you people played it over a half year ago, but I'm impressed. Even the ending had eye candy and a good cliffhanger.
I could mention a few nitpicking negatives about it, but why bother? As a whole it was a great experience and I really enjoyed it.
I suppose Bioshock is next, not sure about Call of Juarez after this one.