I would say it's possible, but not as easy as just mirroring them. The right grip panel maybe, but the left side panel where the Cylinder latch is, that will not fit the other side of the gun without serious modification. Probably easiest just to have them made custom.
I've had good luck finding artists on CGtrader. Particularly a fellow named Ivan Volobuev. I've hired him for a few different things. Here is his link on cgtrader:
Browse thousands of 3D designer portfolios and find exactly what you need for your application - whether its quality stock models or custom designs.
www.cgtrader.com
Sounds like a perfect excuse to buy a 3D resin printer though.

I love mine. I've printed out BR grips in red, green, and orange.