"There are possibly 3 version of this chip:
with PS logo - notched & un-notched"

I had both.

"without PS logo - notched (I'm assuming there wouldn't be an un-notched without PS logo out there, that could be cashed.)"

You assume too much, since they were never delivered to a casino they would not be cashable.

"There's also a 4th version out there that has a smaller inlay, that was used at the table after Harrahs bought the Shoe."

Yes, completey different chip. I only have the $5, Red, 1 large green and 1 large orange insert.
Delivered in April 2004 after Harrahs buy out.

Paulson did crazy things before the GPI buyout with sample chips.

Archie Black wrote them a letter on repros they were selling in the retail store and got them to stop, (to a certain degree }