I think this would be a good solution for mobile because it works the same way that Safari mobile URL bar works, but I honestly would hate this UX for a desktop site. On a desktop site, I would rather the header just be thin and sticky to the top like Facebook, Twitter, etc. because then it's always there for me when I need it.
Actually I found that it doesn't look that nice on my iPhone... the problem is in fact the safari URL bar makes it jumpy.
I like this plugin, but I think if we're going to make a header disappear/reappear, it should be based on mouse position. If I move my mouse up there, then I can interact with the header.
Looks great! Interested in trying this out.
Anyone knows an JS widget that does the opposite? Show the nav bar when scrolling down?