Nothing like going through a TSA pat-down and having poo-covered beans in your possession, haha.
I'm sure that between washing and extreme heat it isn't an issue. Besides, after working in a few kitchens I have learned that the cooking process isn't always as neat and pretty as the resulting dish. If some grossness delivers something great, I say go for it.
One of my artist friends in the Philippines runs a coffee shop that sells it. He speaks the world of it, and I am anxious to try it myself.