I wish that the orderby=     parameter also worked when doing this 

{LISExxxxxx  template_category="a_category_template" action="category"
show_items="true" orderby="cateogy_id, custom_alias"}

I did manage to get what I need to work; but only by calling a UDT within the
category_template to sort an array of all of the items within each category

Awesome module BTW - thanks