I incubate with vermiculite in a tub with no air holes and glad press n seal. Once the eggs are pipped, I remove the press n seal and replace the lid with one that has a few holes in it. I open the lid usually once a day to check on the babies and make sure there's enough fresh air. Once all the babies are out of the eggs, I remove them from the incubator and place them all in a single tub with wet paper towel and a water bowl in my hatchling rack. I spray this tub with water once a day to keep it wet. Once they all (or most) shed, I then separate them into their own tubs.
Last season I took them out of the vermiculite and placed them on wet paper towel after cutting the eggs. I noticed the egg shells got hard to the touch with this method. Possibly from the paper towels not releasing humidity as well as the vermiculite? With my current method, I don't see the eggs getting hard. It might not make a difference, but a hard shell might grab an umbilicus or otherwise make it difficult for a baby to get out of the egg.