I think I'm finally getting what you're thinking. You're conflicted about the harshness of the pad versus the harshness of the product you're using right?
You could try using SMR with a cutting pad, and it might work, but DavidB once told a bunch of us that pads and products should work together, and I kind of agree in theory. Pads are to enhance the cutting power of polishes, not to replace the abrasiveness of a product because you should be polishing with the product, not the foam of the pad. Seeing as how SMR is on the "pretty mild" side, I'd pair that up with a polishing pad, as I would with other stuff like cleaner waxes, pre-cleaners, etc. Stuff like the fine cut compounds and stronger I'd pair with a cutting pad. DACP is a bit of an "in between" product and I imagine you could use either depending on what you're doing.
Just get out there and try out the SMR on either pad (I'm sure people have done this anyway) and see where it takes you.