Yeah this is great documentation on leaf pullings.
One thing about leaves that doesn't have the white portion is that in all of your photos, the plantlets started in the white portion so really we can say that it does make a big difference.
I also like how you covered parts of the leaf with moss, but the base is just a bit laid on top of the medium... is this correct?
I will post a photo of a flowerstalk that has grown a plantlet soon as my contribution.
TTFN
Arvin