One Ping is never enough. I begin propagating usually as soon as I receive a new variety. I propagate again whenever I repot (taking a few leaves makes repotting just a little bit easier). Now that I have lots of cute little baby plants I am less worried if I should lose one of my "Mother" plants. I've never been concerned if the leaves were Summer or Winter form, in my experience they work the same (one consideration is that larger leaves contain more moisture), as long as you don't let the excess moisture of the larger Summer leaves cause rot.
Aren't these little ones cute?
A week or two later: