There is no x64 version of Chrome either so.....
Of course I did come across this
64-bit Google Chrome for Windows, Soon
http://news.softpedia.com/news/64-bit-Google-Chrome-for-Windows-Soon-120286.shtml
Make sure not to miss the date of that story
Yes, but not all forks in the code path have adopted the same strategies, and not all developers using the same forked-code rendering engine have assigned the same priority to coding their interfaces for 64-bits.