Design and Build
For a notebook, it's fairly unique. The cloth wrapped cover is something I don't see very often, and I wasn't really sure if I'd like it in practice. So far, it's held up fantastically. No noticeable stains or wear, but I'm sure your mileage will vary. Mine has been carried around in a bag 99% of the time. I would imagine that harsher conditions would take a toll on this exterior.
The cover is attached nicely to the inside of the book and doesn't look like it will come undone. The spine of the book is a little lumpy, and I'm not sure why. The stitching isn't perfect or symmetrical, but it holds the book together.
True to their claims, the notebook does an excellent job of laying flat. There's a tiny tendancy for pages to stand up a bit when you're using the first or last page of a register, but other than that it does great.
But, you should know that the notebook only closes flat when it's brand new. Once you crack the book open and begin writing, the book will never close flat again under its own weight. In this case, an elastic closure would be perfect. This little annoyance used to bother me, but now I've gotten used to it. I just have to be careful about laying pens on top of the book, as they'll roll off from the angle.