Jerry Dennany sums up his experience with working with WSE2 for a while.
I have to agree with much of what he is saying which is why I have been working hard to try to digest as much as I can and spit it out for other developers to save them some of the pain of learning how to leverage WSE2 beyond just clicking a few checkmarks in the config tool.
http://www.AcehAid.org
Sign up for my newsletter so you don't miss my conference & Pluralsight course announcements!