I've seen a couple or stories similar to this come and go on designer news, but was looking for more recent opinion on this topic.
At the agency I work for I'm employed primarily as a designer, but currently spend around 50% of my time working on front-end code as well. I like it, the mix of drawing up designs and being able to take said flat design and reproduce it with code fascinates me. I'd even go as far as to say that I love it.
I strongly consider a good knowledge of html/css a huge benefit to my designs, not only knowing the limitations of what can be achieved, but also being able to consider little niceties that go into a design. For example the subtle animations and interactions that you have clear in your head, but someone else not as immersed in the project would understand or consider.
But here is my question, do the masses believe that filling this mixed role is a benefit to their work? Or does it 'water down' your talents as a designer?