I tried the package and had to purchase the full version.
Very impressed but my first problem that I found was,
how do you apply the brush to the canvas with NO paint loaded on it?
I often paint with soft pastels and after applying the pastels, use my finger to rub the pastel into the canvas, this helps get a good blending (useful for reflections).
Also using oils, it is important to use a fan brush for blending or softening, useful for misting out.
Maybe these features can all be achieved with certain combinations or are they available with the right selection. (I have only started using this package)