My understanding from folks who have tried to "recreate" the WICO blank is that there are both chipping and separation issues. I know Ryan has worked on several over the years as has Chris Hightower if memory serves me. I know Bob Meucci stated at one point that the glues used to hold the vinyl together was no longer made.
I'm aware of Ryan's work.
In your original post I was under the impression you were talking about WICO veneers.