I went tubeless for road and gravel two years ago and won't go back. I actually took a nail in the tread of my tire, the nail bent 90 degrees and poked out through the sidewall. Because the nail was still working around in the tire it eventually went flat. I removed the nail turned the puncture to face the ground, added air, let the sealant do its thing and finished the last 32 miles of the ride.

The only tubeless flat I've gotten that the sealant can't repair is sidewall cuts from sharp rocks on gravel, which also ruin the tire. I've had two of those in two years of gravel (approximately 7,000 miles).

Also, I am firm believer in Orange Seal.