Default Layer Opacity when usin Custom Style Brush

Hi,

As dogs and horses often needs other adjustments then the default style brushes, I use Custom Style Brushes a lot.

I love the fact that they do create theire own layer when selecting and starting to brus. You can save brush setting with the Custom Style, but it seams that layer opacity is not possible to save. Is that a correct asumption, or do I overlook something?