Ask a simple question and I get a 200+ word verbose rant. If I read between the lines I think the simple answer is No. My only point is that if you have ever used any of these fabrics you would know that their application is pretty much the same whether you use silk, silkspan, Japanese tissue, cotton, Dacron, Stits fabric, etc, etc…
see, this is exactly why it takes 200 words to answer your questions:
Just as I said before,
by your freakishly open ended criteria, silk includes silkspan JapTissue cotton dacron stits etc etc etc,
I can answer 'yes' when
you ask
however, when Hoss or Toolman or ED DM ask if I used silk, using standard criteria for what is silk,
then the answer wouldnt be Yes
now you see the problem with your criteria,
and why we need you to let us know the metrics you intend to use when we answer your questions