I was there and thought it was absolutely incredible! Lippa has outdone himself with the music for I Am Anne Hutchinson, pure genius. I had heard I Am Harvey Milk before, but hadn't seen it yet, and it's definitely much more powerful when you experience it life. Again, stunning music. But I have to admit that I loved Anne a bit more, and if just in the way the story in told (linear, while Milk is unlinear). You can follow the story better and are connected more to the characters, while Milk really is all about the message.
This piece is also such a good vehicle for Kristin, who was just superb. I love it when she plays funny, I really do, but I adored seeing her in such a different role, and because Lippa wrote this for her, and knows her voice so well, she could really shine vocally as well. Not that she doesn't always, but it was possibly some of the best I've seen her do.
The reviews are great, thank goodness (DC Metro even more glowing than the Post: http://bit.ly/1VO5soJ), and hope this will have a long life, as well in future performances, and perhaps even being filmed for PBS or something.