It's hard to find holster for a firearm just released.
If you are looking for a simple IWB and don't have any special requirements, you can call Muddy River Tactical. Perhaps not the best on the market, but this is the one who never told me "no" in such situation.
Tucker Gun Leather -> Deep Carry DC-1 or DC-2 might be your choice as well. They may not have P-10M listed, but they can make one for you if you call them.
The difference between these manufacturers - Muddy uses "kydex", Tucker uses "boltaron"