I was also interested in the Cozy Partner a few months ago but I remembered one of the posters saying he received one for a Sig (even though their available model menu lists the 9c) that fit his 9c. I emailed Desantis and asked them if they actually made the Cozy Partner for the M&P 9c and they replied they didn't, but that they could custom-make one for $75 plus the cost of the holster (I still can't get all the coffee off my lcd monitor).
Instead, I ordered an Ugly Bald Guy Canute, which I really like ($60/4 weeks from order to delivery).
Nate didn't even charge me extra to make it fit the 9c.
If you really like the CP, I'd email Desantis and see if they're actually making it for the 9c now. Make sure you don't have a mouthful of coffee when you get their reply.
Jim