Okay - first a warning. I don't have a camera, so am using a Nokia mobile phone. These pictures are horrible and don't show the case to its best.
However:
This case is excellent. It is the same hard ballistic nylon, or whatever they call it, that Hard Candy use for their hard cases. I have a Hard Candy bubble case for my iPad and the material is identical.
The Viper is very slim and the Macbook Air fits very tightly - the pocket is slightly elasticated to give a firm grip.
Because the case is thin, I'm not sure what would fit in the pockets on the opposite side of the shell - an iPhone or iPod, a notepad and pens probably. Possibly the power pack, although it would make a bump and press against the Macbook. I'm not sure if that is bad or not. However as this is a case, and not a bag, I guess most people would carry their power packs elsewhere anyway (and besides, a power plug, particularly a British one, is just too bulky to fit in here anyway).
The spine of case has a thick rubberised bumper which feels like it would give significant shock protection. The strength of the case, the padded interior and the raised ridges on the outside of the shell make me think that a Macbook could survive quite being dropped from normal carrying height in the case and would be fine, although obviously you'd try not to drop it again.
Mine is the 11.6" case.