Or learn another Lisp. I recommend Guile Scheme and Racket.
Besides, I know lispers hate the idea, and it may not even be necessary, but uniting behind a single good-enough lisp like Clojure will reap more rewards then advocating for multiple (while still good) Scheme implementations.
It's an uphill battle to advocate for something that isn't the status quo, so I'm proud of the little victories.