I've done 50/34 w 11-34, or 11-36, i dont remember. Either way, it's bad for European gravel. You're very quickly forced to do threshold, if not vo2 max efforts when you dont want to, which is stressful on top of being tiring when you're trying to not lose grip and navigate trails with debris, crevasses, rocks, roots and so on.
I drank the kool aid of "1 bike to do it all", and it's basically a scam. A gravel bike isn't a road bike, and to not be horrendous on the road, you sacrifice what would make a gravel bike great in tough environments.
For very average riding / riders, it's enough. I have a friend who's an ex pro, the only cycling he now does is "mindful cycling". Kudos to him. But if you want to push, road gearing on gravel is just bad news.