You could write such a gcode on your own, just make sure you replace T0 where T1 would be used. Then use T1 only on the very last support layer.
eg. Cura has a" post tool change" gcode section to do that.
Sometimes support is needed inside a hollow part.
The dissolvable material should then be on the bottom and top interface layer.
Still there would be situations, where you can't remove the ABS-support structure.
-Olaf