I emailed Safariland about two weeks ago about duty holsters for the PDP line. Their response was we don’t have anything in the works, and it takes 6 mos to a year to develop a holster.
Chris at ghostmandesigns hooked me up and can alter duty holsters to fit and lock up with the PDP.
Still waiting on my C&h plate, but from experience with other platforms I would be willing to bet the C&h is a better fit, thinner, and lighter than the factory plate.
As far as the Ghost wall goes neither of my full size 4.5 PDP have it. Especially after swapping in the dynamic trigger. I would take a look at your safety plunger and see if it is sticking.