Yeah I'm monitoring them. Seems like a good bet that Elixir will be my language of choice down the road. Some great people behind it, I have a feeling once Dynamo gets a bit more mature (2013 is their year) the language will take off.
Developing on Dynamo is already a blessing compared to other Erlang web frameworks[1]. My benchmarking has put simple Dynamo apps on par with barebones Cowboy which isn't surprising given that Dynamo uses Cowboy under the hood.
This video is a nice intro imo (~50 minutes): http://vimeo.com/53221562