This looks like a great piece. It looks good on your wrist. I think this would be too big for my wrist, which is a shame. So for now I will just admire the pics.
I ordered the smooth rubber option and they sent the watch with the ribbed rubber as per gen. So I think the smooth refers to the ribbed strap.
From what I hear the gummy straps are not yet ready? I may be incorrect.
From my research here, I believe that the best thing to do for the longevity of these secs@12 is to leave them hacked when they are not in use. This, I believe helps in reducing the wear of the gears etc of the movement.