By all accounts, Passport is by far the more popular authentication package (95,000 downloads from npm in the last month vs. 2,100 for everyauth). Furthermore, maintenance of everyauth seems to have come to a halt, leaving outstanding bugs and issues unaddressed. In contrast, Passport has 100% test coverage, and has an API that's been proven stable over ~2 years.
I guess when I decided everyauth over passport about 4 months ago (there was an actual decision process IIRC) it seemed like everauth was more mature, I found more examples and other repos explaining how I could bend it to my needs.
Recently I've come across passport quite often and it appears to be the gold standard nowadays... So yes it's going in at some point in time (this is a minor side project only).
I will happily merge a pull request if you care to go for it - I currently only support facebook and twitter and was working on local user/pass up until an hour ago ... ;)