Varusteleka PC18 QR Cummerbund?

I'm relatively new to this hobby so I don't know a whole lot about the different systems. I wanted to know if I could buy a 3rd party quick release cummberbund and use it for the PC18 from Varusteleka that I'm planning to buy. Any brands I should look for? Or is a QR cummerbund not as important as I thought. Thanks in advance for any advice