I ordered my Oasis 2 and Merlot leather cover on November 1st. At the time, Amazon UK said the cover would ship in late November - the 28th, I think, although I could be wrong about the precise date. However, it shipped a few days later from Germany, and I received it on Wednesday 8th November. I'm very satisfied with it - the magnets are plenty strong enough, and the leather looks very distinguished and like it belongs in a gentleman's study. The leather's softish - it picks up textures from being handled. But in my 46 years of life, I've learned to embrace the Japanese wabi-sabi philosophy, and accept some of the signs of wear and impermanence. (
https://en.wikipedia.org/wiki/Wabi-sabi)
The cover stock situation isn't as dire as it seems. Why not place an order and see if you get lucky? You can always cancel if you change your mind.