Builder, myself, not because I am great, but I am cheap.
Frame, "super light" .7/.4/.7 butted main tubes, in this case True Temper OX Platinum. Quick handling, traditional geometry, not low trail. 650b. Powder coat because it's good enough. 5.1 lb frame and fork.
Build, classic modern components, weight weenie with some hidden Ti bits. 17.9 lb without pedals.
-Devin