hog bristle brushes for watercolor?

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Here is a painting I did of some of the hog bristle brushes I've been using in learning to paint skies and clouds.  It would not have occurred to me to use them, but I came across the idea in a painting tutorial, and found them to be really interesting in the way they hold and distribute paint.  To the right are a few of the cloud studies I did using the hog bristle brushes.  (The painting above is not as loose of a style, and I admit that I did NOT use any hog bristle brushes in painting it.  Also, the brushes were too busy posing for their portrait to be bothered with actually painting anything.)

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