I've used a dovetail mount on a P-09 for a year with a Burris Fast Fire III. Is the sight height too high for you?
The reason that CGW turned you down for the direct slide mount is that the slide material is simply nearly impossible to machine. I don't think anyone can do it very easily, simply because of the machining difficulty. I don't know if you can even tap the tiny holes for the sight screws, much less cut the top for the sight.
The Springer Precision and Slaughter Machine mounts both work great. My preference is for the single piece Springer, however, that I currently have on my 97.
Here is what the P-09 looks like with the Slaughter Machine mount. The Springer is a little shorter.
![](http://joelynch.smugmug.com/Firearms/CZ-Miscellaneous-after-11-14/i-hrMm6D6/1/L/PB152875-L.jpg)
Joe