I have a size 61. It is rock-solid stable at speed with excellent low-speed, off-road agility.
This bike is plush. On gravel you feel like you’re floating, and both the suspension stem and seat post soak up bigger hits than I expected them to. On single-track 4-to-5-inch hits to front and rear that would have sent a hard bike off-course did not phase the Diverge—I was able to stay seated, roll over them, keep both tires in contact with the surface, and come out pointed the direction I wanted to go. The suspension improved my control on all types of surfaces. On single-track it went exactly where I pointed it without effort or having to "muscle" through steep hairpin turns.
The downtube compartment holds all my tools. The fork has mountings for fork bags. What’s missing are rear mounts. The GRX derailleur is “fine” not stellar, but it gets the chain to the right cog.
My 61 size, with 2 bottle cages and Shimano XTR pedals weighs, 23. 75#
I can honestly say that I love this bike!