Ive been keeping an eye out for silver aluminum with the seashell loop and only see a couple stores in the US with any otherwise shipping is almost to november. I grabbed the SG with the sport loop originally but Ive had this color since series 1 and am tired of it now plus im not a fan of the multi color "black" band on this. I picked up a silver aluminum with the white sport band for now and hate the white rubber band on this one, really would like to get the seashell band.
You just have to keep checking the website/app each morning around 8:00 am local time. I saw a 40mm silver aluminum with the seashell sport band available at 8:05 Sunday morning at my local store, bought it through the Apple app for in-store pickup, and had it on my wrist that afternoon.
I checked again an hour later and it was unavailable (along with most other configurations) within hundreds of miles.
So you’ve just got to keep checking and be ready to pounce!