barndoors with grids/gels for Genesis lights?

Not sure about the quality of the Calumut Barndoor Grid/Gel Kit.
Anyone use this on their Genesis lights?

Is there a better compatible alternative? One that I can add my own gels to with individual holding masks? Kind of like the PCB LiteMod system.

You should be able to add your own gels to the Calumet version as well. If nothing else just cut some cardboard gel holders. The Buff gel holders are just cardboard templates.