I gave this project a second try and it still looks too shady/unclear for me. First and foremost, are its sources really can be found only on Rapidshare and their "Download permission denied by uploader" or I am missing something here? What kind of opensource is that?
Second, it rarely gets updated, but when it does, new versions can ship with odd bugs, a bugs that do not actually exist in Chrome. One of such was not working tooltips (a pieces of text that appear when you hover over a tab, a button, or an image (on a webpage) with filled 'title' attribute).
Third, when I tried to report that bug at the official forum, my post would never get approved.
I don't really like Chrome either, but I'd say avoid Iron anyway. Switch to Firefox -- which is (I guess) a real open source and, with version 27, just as fast as Chromium, -- or to whatever other browser.