Napoleon Perdis Pro Makeup Mixing Cuff Palette

I can see this possibly being useful to a makeup artist who is working in a setting that involves a quick turn around.  It could also helpful for a bit of practicality and makes things quicker with less turning around to dip brushes in a product mixed on a surface placed on a table.  Otherwise, I can't really see why anyone would need this product. I would personally not wear one as I would most likely get product all over my clothes.