Hey guys,

I have created this little gizmo that lets you create an IBK Stack quickly. It has 2 inputs, one for the plate and the 'holdout' input to add a matte that you want to add to the patching black area.
The IBKColour nodes created by the button 'AddStacked', will have an expression in the patch black knob that will multiply the previous IBK patch black value, by the exponent, creating an exponential patch black operation.

Any feedback and suggestions accepted :)