it appears that starting with 3.10 stack traces for natively compiled 
executables will be available. thanks!
one thing that I would love to see is being able to redirect this output:

try Result (foo ())
with e ->
   fprintf logstream "error: %s" (error_to_string e);
   stack_trace logstream;
   Error e

so that I can log both errors and their stack traces in a file for later 
examination, but still continue running.

Thanks.

Sam.