We've talked about this for a bit internally, and we decided that it would be okay if he were to sell his product. There is nothing in our license that says that he cannot sell it.
We would invite Doud to contact us at firstname.lastname@example.org, and we can funnel sales to him.
IMHO, it would be even nicer, if he Open Sourced & Documented it, and gave it away. . thus giving back to the community.
I would caution all users to not give access to any unknown person into your system.
Doud- If you wish to sell it, you have our blessing. We're giving you the chance to become a partner, if you're interested.