Is there any way to generate banded reports

Ken,  there is not anything out of the box that can do this in Skuid.  There are a couple of ideas that come to mind toward customziation. 

You could include the child records as “child relationshiop fields” on your primary object model.  Then each row of main records would have a column that had the child records listed.   You could include some HTML in the child relationship template to put the child records in thier own table (within the cell)

An aggreagate model on the child records could also be used.  The grouping functions allow “roll up” grouping - where each level of grouping gets a subtotal row.  Let me warn you that formatting leaves much to be desired, and that row totals don’t work here.   But it might get you somewhere…

You could also go to Javascript and create somthing from scratch. 

I think that’s all I can think of this morning.  Let us know if you figure somthing out. . .