It had not occurred to me to try to jam my P-83 into my P-64 holster. I cannot imagine you could ever get the flap closed even if you somehow got it in there. My P-64 is a pretty tight fit in its' holster and the P-83 is notably larger. The guy on GB in Poland sells P-83 holsters (I have not ordered anything from him as yet, but I have seen reports from others who have and seemed to have good things to say).
You are 100% correct, Max. My P64 barely fits in the holster it came with. So, as you say, I take it that the P83 holster must be bigger. Boy, they sure look exactly alike for sure! I just didn't want to buy another of the same holster.
I just saw that the P64 holster came with a cool cleaning rod. Does anyone know if the P83 holsters come with one too?