I put up some of these pictures in the cactus forum, but maybe this is a better place for the whole story. Mostly by way of illustration. Echeveria subrigida from leaves off the inflorescence. The key is to get the whole leaf with the base completely intact, which means cutting carefully around the margin to be sure.
The mother plant & the flower stalk after leaf removal.
Leaves sitting in the shade for a couple of days and then placed on top of soil. They will root and then little plantlets sprout from the base.
A week later I come back for more and the flowers are starting to open. I plan to do this 2 more times for a total of 12 leaves, of which I am hoping 8 plants will grow. We'll see.... each time I wait until 2-3 days after I water to get the plumpest leaf possible.
Finally the offspring from last year's propagation, recently graduated to a 10 inch pot.