Mine went into lockdown Saturday night at 11:00. I checked for pips this morning, but nothing yet. When I candled before lockdown, they were all going strong, so I'm hopeful that they all hatch.
As far as the egg carton method, I don't really like it, for some reason. Never tried it, so that isn't experience talking, the straight up and down just doesn't seem natural. What I do is create little trays for them to hatch in individually. First time, I used napkins with the sides folded up, but I didn't make them deep enough, so some rolled out. This time, I'm using cupcake papers. Two papers each, and I scrunched the sides down first. When I put the eggs in them, the sides sort of "hugged" the egg. I'll let everyone know how it goes.