I ordered a F.I.S.T. Kydex holster for mine last week. I had one that I used with my last PM9 and wanted another for the PM9 I bought a week or so ago. I carry IWB just to the right of my belt buckle and the F.I.S.T. works very well.
I also have a Raven ACR that I use for my J frame revolvers. They're a great holster as well but take up a good bit of real estate on the belt line compared to the F.I.S.T..