One other thing:
It does not seem to retrospectively update the attributes when they are changed.
For example my attribute group “Sizes” contains: Small, Medium and Large. If I then add an Extra Large category it does not update this to existing items?
Can you use PHP in the image caption?
Yep just the WP Galleries with SkyLab
HTML works fine, just not shortcodes. I was hoping there would be an easyish way to do it.