Love these tires. For those dry events/epics when I'm going to be more off-road than on-road, I'll reach for these tires over my Challenge Gravel Grinders. They're very voluminous which means I can run pretty low pressures. The 60tpi casing is supple enough but adds a level of puncture protection that I can rely on if I'm on really rocky roads/trails.
I managed to set these up tubeless very easily. Literally 2 full pumps with the Lezyne Dirt Drive on my DT Rims (on my Asylum) and pop, they were ready to go. Held air brilliantly and were an absolute joy for the very last PDX Trophy Cup.
At 40cc make sure your frame has enough clearance.