There are a couple live sites already using the theme, if you notice any issues you can report them here and I can get to them when I have the chance. The theme is open source, so any improvements from other developers are also welcome!
Right as mentioned in the original post, this theme only works with the “categories only” category page style (unfortunately the theme previews on our theme creator site can’t set a different category page style).
I’ve had a to-do to add support for other category styles, i’ll try to get to that this week.