>>2
There were two other alternatives that I didn't feel very compelled to use. Of course that doesn't mean they're worthless.
- https://github.com/axch/pattern-case
- https://github.com/mpacula/Scheme-Power-Tools
What I really needed at that time was a port of Alex Shin's pattern matcher. It wasn't published yet. Weird synchronicity, someone was working on it. The code in >>1's link is only 3 weeks old.