I have a Gravel King SS on my front wheel right now, running with a tube. Prior to this I ran a Marathon Supreme on this wheel.

It rides fine, but the puncture resistance is inferior to the Marathon Supreme. I know this is anecdotal and it's just one case, but I got a puncture from a triangular pebble, not even glass, that would have never punctured a Marathon Supreme. I couldn't believe it when I pulled it out. If you're going to run it with sealant then this doesn't matter.