No, I didn't. Mainly because I really don't think one option is better for dev and another for prod.

Based on your replies, it seem like most people would expect a Lisp library to simply work as best as possible rather than do exactly what it's told.

Therefore, I'm starting lean towards using a GC hook here, even though the complexity of the GC'ed object is much more complex (the connection having a processing thread, for example) than the only other time I've actually used this feature for effect (which only had a simple native object that needed to be freed).

Regards,

Elias