They are teaching this at my university. I've had a couple of courses on it. It's great to put on a resume. I have " Black Belt in Six Sigma". I put that catch phrase in mine. If they see you have any training in this type of mgt you have a huge advantage over someone else when applying for a job.
It's good when aplying for jobs. Most people never get in the position to implement what they have learned. It's great to know, but not too helpful. It's pretty popular right now though.