He says although the blade is harder to make (hence the price) it is a much better blade than the 01 and has hugely better edge retention.
That's down to the nature of Damascus blades edges looking "toothier" under a microscope due to the way the carbides are formed, I think one of the reasons they hold upto the elements a bit better is because they are pattern welded using a certain amount of nickel, but the guys like C_Claycomb and Martyn would know better than I.
Ladder pattern, Odin's eye and a few other patterns are available as bar stock, but they are considerably more expensive to buy than normal O1. If the knife is cut from bar stock and then ground to a normal pattern I think the only major difference then would be the HT side of life, but could not say to be certain. Once again the guys mentioned above and obviously the guys from BB are far more qualified than I to make comment.
It is a lovely knife, but could I justify the cost??