Not sure why you're concerned with punctures if you'll be running tubeless.
I'm running Horizon's on my Kona Rove and was surprised at how much traction they actually provided in loose over hard dirt. Even running full pressure.
So with that said, if I was running exclusively gravel, or mostly gravel, I wouldn't hesitate to run Byway's.
With the Horizon's I have gotten multiple punctures and in all cases lost zero air pressure [*knock on wood*] (set up tubeless). WTB seems to know what they are doing as far as tubeless goes. My i23's with the Horizon seated the beads without even needing to remove the valve cores.