I am wondering if Ogon is really what I have! I am zone 7 (not sure if a or b) and it got down to mid 20s, and the sedum I'd thought was Ogon definitely shows freeze damage. I've brought the container of it inside in hope it will recover, but a plant meant to be hardy to 6a, temps down to minus 20, should not have suffered this much damage. I was thinking the hardiness notation maybe should be changed, but if yours is surviving nicely outside, then I think I may have a different plant entirely (though it looks just the same.)

Very curious indeed!