I'm interested in the new Sand 2 jacket. I notice that the jacket shown in the Revzilla video does not have the hook at the neck to hold the collar open in hot weather, like the old Sand jacket does. Is that the way its going to be, or is that just a pre-production jacket shown in that video? Also, will the zippers on the arms be of the locking variety? The arm zippers on my early Sand jacket tend to unzip a bit by themselves. Lastly, do you know if the two main outside pockets will be made of waterproof materials like on the old Sand jacket?