dovh thanks for getting back to me 
I have pulled the trigger and ordered this OSPW
I am almost doing a mirror build of my Genuine SL8 as I have the Ceramicspeed OSPW and well this does look very good!
I also have have ordered a Ryet Saddle and some other bits.
Hoping to get this build down to sub 6.8kgs
How the bike riding?
Nice stuff! It's very similar to what I ended up with. I also got a direct mount but did not use it since I felt it didn't fit on there very well. Compared to the hanger Tantan sent with the bike, the edge around thru axle hole and screw hole were quite a bit higher, and when mounted to the bike, it was sticking out inwards.
As for how the bike rides, I only have about 40km on the bike so far, and it feels really good. It's stiff but not uncomfortable, but then again, I can only compare it to the entry-level aluminum bike I had before. This is miles better in terms of riding comfort and feel in comparison.
Also, I'm about to head out for a 100k ride today, so we'll see how it feels on a longer ride