We wrote our own language switcher and it works well in normal Joomla articles, and menu items as I can figure out using Joomla's API what a given menu or article the associated item is in a given language.
But I'm not sure how to use Joomla's API to get the associated EasyBlog post URL to a another Easyblog post in a given language.
Do you have some example PHP and jQuery code I could use for that, now that EasyBlog posts support associations ?