Too early to say for sure, and raining so I didn't remove the sheet from mini garden yet, but I peeked under there a few minutes ago, on the Haw side. They look OK, feel firm. It got down to 14 here, and was below freezing for a span of about 48 hours, windy as if hurricane remnants were passing by (though from the north.) The sun was shining well most of the time it was really cold, that was probably the only good luck part.
Good, bad, and/or ugly, I'll post some pics when I'm able to uncover it.