The main problem that I see with the 9 is reliability. Powder selection is limited. 9mm cases, even from the same manufacturer, differ in case capacity and dimensions.
DWFAN is one of the only 9mm shooters that does really well that I know. John Pride got so fed up with his that he sold it and went back to a revolver.
The good news is that if you can't get it to be reliable, you could always ream it to 9x23.