The image that accompanies this project has the tabs 'Pages' and 'Stories' under the group of 'Type' on the left and 'Newest' and 'Oldest' under the group of 'Sort' on the right.
My assumption, looking at this, would be that if you were on the 'Pages' tab and clicked on 'Newest' it would show you pages sorted by newest, whilst if you were on 'Stories' and clicked on 'Newest' then it would show you stories sorted by newest.
I tried to setup something similar but whilst building the relevant displays is trivial, the closest I could get the UI to be was to have 4 tabs for 'Stories - Newest', 'Stories - Oldest', 'Pages - Newest' and 'Pages - Oldest'.
The only way I can think that this would work as I assumed it must do from the image would be to have two displays each for both sorts (one 'Newest' for pages, one for stories) and to conditionally swap them out according to which tab is currently active, i.e only show the story sort tabs when a story tab is already active.
I don't think this is currently possible with this module but maybe there is another way I am unaware of.
Am I missing something or should this be a feature request?