This sounds intriguing. I wish there were some more complex examples. Part of the greatness of Promises is taking a big chunk of pyramid code and turning it into a set of simple steps... I'd like to see how this would handle that.
Good idea, I'll definitely post a follow-up with some real code done using async/callbacks and highland/streams. The comparisons usually start to look more favourable with longer examples, due to the Highland API being so composable.
