This looks like a winner to me as well. Personally I find university courses to be motivating, and unlike other programs this doesn't seem to be designed to rip you off or put you in debt. You learn the same good material as on-campus students, and you get an MS out of it from a good engineering school. The credential is meaningful because it requires completion of courses that are difficult but also designed to teach you the material.
If you have no engineering background, I expect you'd need to spend time doing prerequisite/undergrad courses beforehand.
The down side is that: it takes time and money, and nobody will give you a raise because you have an MSCS (though maybe it could help with changing jobs). But the actual knowledge and skills are useful if you can put them to use, and you may also find the courses to be satisfying in themselves.
If you have no engineering background, I expect you'd need to spend time doing prerequisite/undergrad courses beforehand.