So, Greenspun's Tenth Rule seems to have come full circle: now, "Any sufficiently complicated Coalton program contains an ad hoc, slow implementation of half of OCaml." ;)
I've left out "informally specified, bug-ridden" because I guess that's not the case for Coalton, but kept "slow" for when Coalton is used on a slower CL implementation.
There's also Armstrong's Corollary: "All sufficiently complicated distributed systems contain ad hoc, informally-specified, bug-ridden, slow implementation of half of Erlang".
It remains to be seen how Coalton fares there :)