You could do this, and it is a very cool idea. But you have to get your HIPS/ABS combination working first, because if it does not stick, it does not stick…
How you could do this would be to create two models.
Model A, your actual model.
Model B, a “support model”. Say you stretch Model A downward 5mm, and then subtract Model A, so you have a model that is just .5mm where you want the HIPS.
Then, print both model a (ABS) and model b (HIPS), with model a having a support offset of 5mm.