After some time with EB, I must say that Joomla just makes my experience with stackideas product (EB, ES) look bad.
examples:
double menus - joomla menu and eb menu (three if you include ES)
media - many ways to insert media and then add to that eb media and es media
Without Joomla - one single menu, one media management, one user manager, etc. etc. and all integrated nicely even with own SEO system that would be far better than joomla.
So far, it's fumbling through joomla and EB/ES side of settings and nothing but headache.
Dream setup would be one stackideas product as "base" and other plug into it. Let's say ES (like wordpress) and all the other stackideas products snap into place similar to wordpress plugins.