Oh that's interesting!
Does it have bidirectional tracking with Github? (if I create or comment on an issue in Github it will be reflected on epiq, and if I create on epiq, some bot will post it to Github). For me this is the key feature.
Also
> The system is designed to assure robustness and uses a number of techniques and design patterns to avoid merge conflicts.
I think the docs should describe this in detail.
Anyway maybe ask him to post this to HN some day!