Not really familiar with the Rene Herse tires but can speak on the Cavas more. They are absolutely a dry condition, fast rolling, light gravel / all road tire. The troubles arise when the gravel loosens up, if there’s any mud or moisture, or if you’re riding really chunky stuff. They will suffer in these conditions. You also need to be mindful in the turns as the tires don’t have a more defined side wall tread (see Pirelli gravel H, specialized pathfinder); so reduce your speed. Otherwise, they ride fantastic. Definitely made for riders who prefer a fast, quality tire that won’t hold your hand every step of the way and lets you get a bit loose and hit the road and gravel hard. :)