I've been meaning to ask this on here as well.
I've been doing it the new way and I've been thinking of switching to the program as outlined in v3 of the pdf. 1) I like the pullups/chinups since I'm a climber, 2) I seem to see better results with doing some sets to failure; but that said, not if I do all sets to failure, not sure why that is...though when I was doing 1 on 1 with a trainer I noticed that he would have me take one or two of the exercises in a session to failure, but not all of them.
Has anyone done it both ways and have some thoughts to share?