Craft Holsters is where I got my performance center holster. They happened to have mine in stock, but I understand it can take a bit for them to make things that aren't.
I use a Blackhawk Omnivore kydex holster for my S&W M&P 10mm 2.0 (4.6") with a Nightstick weapon light and Holosun 507C optic. Not the prettiest retention holster, but very functional. I most often use the OWB paddle for relatively quick on and off.