Ask HN: Is a Computer Engineering masters worth it?

I'm in my undergrad for Computer Science and have about two semesters left before graduation. I'm working in the power industry right now as a software engineer (C#/.NET mostly), and I got this nagging feeling that I should have gone for Computer Engineering instead of Computer Science.

If I'm interested in getting into lower level systems programming/firmware (and maybe even doing some hardware stuff), would it be worth it to go for a MS in Computer Engineering or could I learn most of what I need to learn on my own? If I do go for the degree, I likely could do it part time while working.

There isn't necessarily anything in particular that I want to work on right now, but I feel like having a stronger background in lower level systems and hardware would prove beneficial for me in the future.