Cheaper way of printing with PVA (3 replies)

This is just a sudden idea that pop up in my head. Is there a way to print support and object with one material (ABS,PLA), but use PVA only at the place where support meet object? This will save a lot of PVA without having to put a empty layer between support and object for easy support removal, which result in a not so smooth surface. (I'm using both Kisslicer and Slic3r)