Yes, we used Polymer to build the new ING banking portal. We had each component in its own repository which was kind of neat. I am doing React now and comparing both I think React is better, there is more support in the community. With Polymer all you basically have is the Polymer docs most of the times.
Yup, lots of people, we are creating some new components for RhodeCode using Polymer right now. Whole team is very pleased in how nice it is to work with it.<p>Companies like EA, IBM, General Electric or Salesforce use it in production. Works like a charm, there were multiple sites that list some polymer projects I think.<p>IMO it is a mature project perfectly fine for production use today - slack community is ~5000 members and vary active - lots of job offers, lots of discussions and applications being worked on.<p><a href="https://new-console.ng.bluemix.net/" rel="nofollow">https://new-console.ng.bluemix.net/</a><p><a href="https://www.battlefield.com/" rel="nofollow">https://www.battlefield.com/</a><p><a href="https://github.com/abdonrd/PolymerProjects" rel="nofollow">https://github.com/abdonrd/PolymerProjects</a>
Not me, but there was a dev from the Seattle Times who gave a talk at SeattleJS and CascadiaFest about using web components in production.[1]<p>[1]: <a href="https://thomaswilburn.github.io/slide-dash-show/#0" rel="nofollow">https://thomaswilburn.github.io/slide-dash-show/#0</a>