Your module seems to be working great with pathauto url aliases, but it was more difficult to get the same tokens to work in setting breadcrumbs when using the "Crumbs" module found here: http://drupal.org/project/crumbs

I was able to get a workaround in effect, using a solution that points at the path of the referencing node, but I'm wondering if there would be an easier way to get a token for back referencing to work with "Crumbs"?

See the solution and initial issue here: http://drupal.org/node/1887806.

Maybe this is just the way things need to be. Either way, thank you for the fantastic work on this module. I hope it becomes a part of entity reference!