Earlier quoted context omitted.
I can't get it working on Windows. The Consolas patched font looks ugly and it does not show the fancy glyphs. Even using Menlo, Inconsolata or Mensch version posted here http://news.ycombinator.com/item?id=3457785 the glyphs does not show as on the screenshots on the vim-powerline readme. Sad :)
The hinting/subpixel-shading/whatever on Menlo and Mensch looks awful on Windows Vista, although they do provide the proper symbols. After patching Consola, I got the same awful look and no symbols, even with `let g:Powerline_symbols="fancy" set and c:\tmp\Powerline.cache deleted before running the first time. Edit 2: The symbols _did_ work on Menlo and Mensch yesterday. Today they do not, even with setting the font…
After deleting the Powerline.cache file, I now have the '€' symbol and ',' instead of the arrows I think.
Using the Inconsolata that can be found upper in the comments or Menlo does not help.
It's still very usable and useful ;)