really? my NYC based SA gave me the impression that they had the medium coming and I have it on my "wishlist"
I think some of the personal shoppers' photos posted here are mediums, but to be fair I'm not sure if they're US based
the top handle mini in purple is in lambskin so i'm not sure if it would look as good, but i'm a purple lover as well and the 22a caviar looks

in terms of size i have the 22p light blue top handle mini, and it's way better than the small since it fits the same and you can wear it crossbody! so if the lambskin look is the same as the caviar i think it's a good alternative