I looked into this for my current project, but in my opinion you have to leave behind too many things if you do this instead of Sass. Namely: -No mixins -No maps -No loops and conditionals Maybe a couple of years ago, but now that libsass runs so fast I still don't see the point of using this.
Using a nice component based architecture (perhaps like SUITCSS) and this you can write really maintainable CSS, that can be understood by everyone, now and in the future, not just those that have learnt Sass.