I only use mixes from Compass, but rely on Web Essentials to compile SCSS files when saving. This gives me a much better development experience, since compass watchit takes a few seconds to compile the stylesheet, while Web Essentials are very fast. Since compass watchI often have problems with the fact that I rebooted my page in the browser before the CSS files are fully compiled, sometimes confused me.
Since Compass SCSS files are actually the library I rely on, I also copied them to my source tree to have them in the Git repository. This also solved the problem that Web Essentials was unable to resolve the Compass files.
, , Mindscape Workbench. , Mindscape Workbench, . YMMV.