I'm excited about this development. I'm really looking forward to a web implementation of Material Design that is not bound to Angular 1 and is production ready. I did a few projects using React + Material Design that was enabled by Material-UI component set. [0] And although Material-UI seems like a really great implementation for React, it's certainly not production ready yet. I did spend a significant amount of time fixing / messing with its code to make things work relatively smoothly.
Regarding the Google's MDC-Web [1] the demos look promising, although the components seem to lack polish and animations sometimes get stuck. I hope they will push them to the point where these components will be as good as Angular Material ones. [2]
Take a look at https://react-md.mlaursen.com it's the most complete and best looking Material implementation I've seen so far!
I also had my fair share of experience with all the material-ui, react-mdl, materialize and what not. None of them is production ready. Even if you used plain mdl (which is by Google) there's so much missing like select, calendar, etc
Regarding the Google's MDC-Web [1] the demos look promising, although the components seem to lack polish and animations sometimes get stuck. I hope they will push them to the point where these components will be as good as Angular Material ones. [2]
[0] - http://www.material-ui.com
[1] - https://github.com/material-components/material-components-w...
[2] - https://material.angularjs.org/latest/demo/button