Surprised to see this thread!
I was recently trying to purchase the new 41mm Sub as well (first time buyer) but after visits to many different AD's and research on other forums, it just seemed like it was going to be unrealistic for me as a first time buyer. Some Rolex enthusiasts were saying it would be well over a year. That hurt.
Ended up getting a ref 16610 circa 1991 from an AD as soon as it was available. Was able to save some $$$ with a Chase Sapphire promotion as well. As much as I wanted the 41mm, I'm extremely happy with the decision I made with the 16610!