This is a nice looking product, and I have set the bookarc for macbook air up with no problems. The macbooks fit snugly in the arc (I have an early 2011 15" macbook pro) and the build quality is nice, as is the weight and feel of the product.
However, one thing that is not addressed is the wi-fi problems caused by operating in 'clamshell' mode, i.e. with the lid closed and an external display connected.
My wi-fi quality decreases significantly when nested in the bookarc, sometimes to the point of being unable to connect. When I remove the macbook from the bookarc and open the lid, I am able to connect flawlessly.
I urge you to check your return policy before buying, as this has turned an otherwise spectacular product into a completely unusable piece of junk.