I have tried dozens of tires on my Steve Potts gravel grinder. This is the perfect tire for mixed surface use. Fast & quiet on pavement with great cornering traction (even at 30mph downhill on pavement). Plenty of traction on fire roads & single track. Also, the best sealing tubeless tire I've used so far (loses less than 5 psi per week).
I've been on the hunt for the elusive fast-rolling mixed-tread tubeless gravel tire. I've ridden a small handful of options. The Terreno Dry rolls great on all surfaces, corners reasonably well on gravel but finds its limit when climbing out of the saddle on graveldirt. It just does not have the tread to offer full traction when out of the saddle in loose conditions. It set up tubeless without any trouble and has proven to hold pressure great. They size true their 40c spec, though the sidewall says 38c. The rear tire is showing considerable wear at about 700 miles ridden. It's been a great tire for mixed rides where road leads to graveldirt. You can do better for full graveldirt use.