Are you looking for white/navy? That seems to be the only color that we are low in sizes. Unfortunately we won't be able to get more of that color. The black 308 will be available to us as Yonex is offering that shoe for 2013 as well. There will be some new Yonex shoe models coming this month, but I don't know much about them yet.
I do not have any experience with the clay outsole of this shoe. Let me check with some of the guys to see if they have any feedback on that question for you.