I like how the Airforce stencil faded with the dry cleaning...makes it look like a battle worn original. HPA literature says it will completely go away with each dry cleaning and will need to be re-applied, glad to see it actually just fades. I recently bought a Buzz Ricksons N3 parka that has the stencil, now I know what it will look like after dry cleaning.
I have one of the first batch of the original series by Eastman. It has been soaking wet more times than I can count and washed ('as for woollens') a handful of times. The stencil is still there. The only thing I would say is that the lining and the outer shrink at different rates.