If you want to use these tubeless you will need to use Orange Seal Endurance. Regular Stans does not work with these thin skin tires. I returned these after 70 mi of use do to them leaking constantly with Stans sealant. I next ordered Gravel King +,same chronic leaks with Stans. I wised up and bought Orange Seal Endurance, problem solved instantly! I still prefer the Terreno tires.90 psi vs 60psi for the GK'S.I would have given them a 5 if not for the leaky sidewalls.The Terreno's seemed to have more grip. The GK's are still impressive.
I have these mounted on my Giant Revolt with Mavic tubeless rims. They roll nice on pave and have enough tread to get some real bite on dry gravel. I have not tried them in muddy conditions so I can't speak to their effectiveness in wetmuddy conditions. They were pretty tight during initial mounting on the Mavic rims but once mounted seated nicely.
Im a daily commuter over mixed terrain and the tires are amazing. I run the 35mm because that fits in my fenders. These are a tubeless setup that mounts and inflates easy. The slick center rolls nice on hard surfaces and the side knobs grab better than youd think. Ive pulled 5 pieces of glass out of my rear tire without any actually puncturing. Id say these are a solid 3 season tire.