I've never gotten any serious hole stopped with road tubeless. But the little thorns or snake bite style punctures are gone. Which made up the vast majority for me. For anything above a couple of mm then I'll switch out to a tube. But for me the major thing is that I'd have gotten a flat from that anyway. It's that I don't get flats for all the other random little shit that tubeless is great.
I've never gotten any serious hole stopped with road tubeless. But the little thorns or snake bite style punctures are gone. Which made up the vast majority for me. For anything above a couple of mm then I'll switch out to a tube. But for me the major thing is that I'd have gotten a flat from that anyway. It's that I don't get flats for all the other random little shit that tubeless is great.