I like it. It's good if you're goal is to eventually sell dual licensed products. A company that is just using your product on the small scale shouldn't have

I like it. It's good if you're goal is to eventually sell dual licensed products. A company that is just using your product on the small scale shouldn't have a problem with sharing their code too. If a company has monetized it in a way that makes them protective of their code, you can sell them a commercial license.