I'm pretty comfortable with Erlang, actually, having used it on and off for the past 9 years. Elixir looks cool, but a bit too experimental for what I'm working on. Chicago Boss makes me a bit nervous from that point of view too, for that matter... so we'll see what route we end up taking. Evan Miller, for the record, is really great about responding to bug reports and code ideas, so that is a big plus about the project.
