Is it safe to assume that this compiles CSS much faster than the original?

After some brief testing: definitely. Faster than LESS by a good bit, too.

I'm not sure I'm going to use it, because of the compiled dependency (I'm on a Scala/Vert.x stack and I like being able to just check it out and hit "go"), but it's at least a practical option for me and I'm glad it exists.

Huh, never saw this! And it does seem to support SCSS (I don't like the SASS style at all). I'll have to take a look at this more closely.

Thanks!