Feedback on "Event in a Tab" UI design (GSoC 2016)

Greetings all,

We are now seeking broader feedback from users on the UI design for the 
"event in a tab" feature that I am working on for Google Summer of Code 
2016.

Please take a look at the following blog post which contains a mockup 
image of the design and some notes about it:

https://blog.mozilla.org/calendar/2016/06/gsoc-2016-seeking-feedback-on-ui-design/

Reply to this message with any feedback, comments, suggestions, 
questions, etc. or feel free to use one of the other feedback channels 
described in the blog post.

I look forward to your feedback!

-Paul