Hi B-Man2,
I am no expert on the process of making wax cotton or oilskin cloth but have been restoring and maintaining a lot of Belstaff's & a couple of barbour's. The original wax cotton is a prepared cloth that will absorb the hot wax without penetrating totally through it. I remember a guy that use to work for Belstaff on TFL saying that they were always trying to improve this process while maintaining repellent properties. That is why you NEVER totally wash a wax cotton garment in a washer or with solvent, doing so will return the cloth to almost it's original untreated/unprepared cotton base.
So waxing a Pike N1 is at your own risk, it will work but with a couple of surprises!
And I would never sit in a car or indoor furniture with a freshly waxed 1982 Belstaff Trialmaster.... man but they are nice!
Just my two cents!
Dany