Still waiting for my missing seatpost wedge parts to shown up, been over 3 weeks since Alisa has send it out...
I did get mine. When I tracked delivery of the package, the first one got stopped by CN customs, so Alisa sent another one. Somehow, now I have both packages lol, so maybe check the tracking. I ended up getting delivery in about 3 weeks after all that.
Btw they do have a saddle clamp for oval carbon rails. But you can also find oval adapters on Aliexpress - the saddle clamp is the same as what I believe is the Ritchey one-bolt clamp, and those can be found in several different sizes on Aliexpress.
Now I can finally build the bike, yessssss!