Yep, rode the Mauka several weeks ago. Really easy board to ride. Big and floaty, but still carves nice. I noticed that it requires more forward weight, but I'm used to smaller boards.
Also rode the Ginsu last weekend. Sweet ride! Every bit as good as an IS Sweet Spot and more forgiving. No pearling at all. I thought all the grooves on the bottom would slow it down, but it was a fast board.
The only disappointment of the boards I had was the surface finish was lacking in quality. But I got ahold of Grindwater and they are putting an epoxy coating on the boards for 2011 to make them 40% stronger and to give them a better finish.