Nope, not Griffin.
Is some generic brand I purchased from KMart here in Australia. Cost me AUD$35 (USD$40).
The back is fairly thick, and has a rubber like texture on the outside. Very solid though.
I have a thing against plastic/rubber. They protect against general scratches and very light drops on to carpets but the ones that are leather like vuscape have very dense internal padding which is very shock absorbant. To picture that, imagine a thick piece of sponge squished down to just a few mm thick, layer with some unbendable plastic all leather bound on one side with super soft lint lining on the other. That pretty much sums up the viewscape for me. Its the best compromise between style and protection for me. For me,
Leather > Rubber > Plastic > carbon skin > naked