Looking forward to seeing how this all plays out, and I hope you get to the bottom of it! When I have problems like this, the answer tends to be a stupid little thing I missed.
Please don't think I'm trying to be "that guy" because I'm not, but threads like this are why I tend to be a little wary of the latest developments in knife steel technology... I'm really hoping that your worries and mine are soon set at ease, as I'd really love to love Procut and maybe try some for myself.
Here are my questions, which I hope will contribute something of value...
Are you grinding bevels before or after heat treat? If before, are you noticing any issues with delamination then?
Have you broken any heat treated blanks to check the grain structure?
Could you send a blank to someone to be hardness tested to check behind BOS?
Has anyone sent ProCut to Peters yet?
Just hoping to add some more potential perspectives so that we can hopefully solve this mystery that much sooner!