My 'Italian Polish' which consisted of multiple layers of cream polish rubbed firmly into the leather proved to be rather 'fugitive'. It makes for a great way to develop patina quickly but do be prepared for the color to move around a bit. Particularly getting lighter in the creases. Rather like the 'crust' finish that G&G and EG tends to use in their patinated shoes.
Not saying I'm unhappy about it - but do want you to know what you are getting into.
I think I've decided these bargain PA's are going to be a testing canvas for me (an anyone else who wants to chime in with suggestions) to see what's possible. Let's start trying to get a faux G&G similar to what you did with the Italian Polish and if I like it, I'l l keep it for a while. If not, strip them down and start anew.