I have the frame and I am using it as my winter bike, reason for this this frame has one big flaw in my opinion as already been stated: the clearance between the chainstays and the chainring/chainring bolts is to tight. I have tried 3 different cranks (sram red 22, sram axs red, rotor) but they all touched the frame, even in different configurations like double chainring (35t/48t), single chainring (46t). Sometimes it was the bolts, sometimes the chainring.   Since I wanted to use this frame with my power meter as a gravel race bike, I decided to go for a different frame (Yishun G071) rather then having drivetrain issues and potentially abusing expensive cranks.
Overall the quality of the frame is good, but you will need a crank with wide chainline (47.5mm).

That would be the VBR-218 there's a thread about it with people on the rb direct mount version!