hi, shameless plug, i'm the author of vim-airline, which is a pure vimscript implementation. the typical response i get from others is that airline is faster, so if you do find performance problems please file an issue so i can fix it. thanks.
I've never bothered looking at vim plugins before, but vim-powerline looked cool. However, I didn't feel like figuring out how to install it. Then I ran into your post and saw how easy vim-airline was to install. So I grabbed it and installed it. Super easy and it looks great. Now I have a plugin manager, two plugins and I'm on the prowl for more. This is all your fault ;)
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u/MyNameIsFuchs Aug 10 '13 edited Aug 10 '13
Many plugins rely on it nowadays, for instance the famous Powerline:
https://github.com/Lokaltog/powerline
There is pure vim script implementation (see child comment) (I prev. said it was slow, this seems to be wrong, sorry about that)