As it currently stands all of the features work as advertised on any site that I tested with. Still having to export all languages as one file, import all and delete the non-native languages from each MS site still is a pretty manual process to have to work through if you're dealing with lots of languages or post types.
I've hit a bit of a development wall relating to the WP Export customization - http://wordpress.org/support/topic/extending-export-to-support-custom-field-selection-by-plugin. But with some assistance (or a possible core update if required) to resolve that would make this a great solution to automate a challenging manual process at current.
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