There are two main differences between the Progressive and Universal that I am aware of.
The progressive does not have the shell plate locating straps for adjustment.
It has the "O" size (smaller) powder measure.
I do not think the lack of straps will impact with 9mm, as much as other calibers, and the "O" bar should be able to be enlarged to drop what you need to load, or you can get an adjustable one.
Unless another member knows otherwise, the other parts should be interchangeable.
Maybe I am missing sonmething in your question, but with the ease of changing out toolheads, calibers, etc., there is not really a big advantage in what you want to do by changing the caliber of a dedicated machine.