Funny that, I was actually in CC cycle last weekend and I had a peek at the gs dry.
The outer shell is very soft, and the wp membrane is a z-liner deal as they say. BUT, they have it arranged where the vents go directly through the z-liner to where your body is - if you have ever seen an olympia AST, it is kind of like that. It looks like BMW did a better job with the gussets/seam sealing, so it should perform a little better.
What they didn't mention in the press release is that there are these two giant fold out reflective patches that are hidden in the two vertical chest pockets. They look pretty comical, but I guess it'll work.
I'm not a big fan of the colorways though.