Residential convention for double-hung windows has the inside sash normally the bottom sash unless the owner changes them.
This makes inserting a pre-manufactured, double-hung sash set, easier.
However, this will alter the insulating properties as the rails will not line-up and seal properly.
I recall one house that my parents owned some 25 years ago that had full-height screens and allowed you to slide the upper sash down as well as raise the lower sash like a normal double-hung. It was kind of nice. There were side latches so that the upper wouldn’t fall and could be latched in the full closed position.
I rather liked that design. Seems that with the right fan setup, you could circulate some air within a room nicely.