I think I've been misunderstood.
Without going into too much detail, the duo-doweler with the template has no "stock" way of aligning a second row of holes on 224mm centers or whatever you might need for a given drawer slide. There are some aspects of the way it's designed that seem to be oriented towards making perfect 32mm grids and others that are confoundingly off by a hair. Even assuming you had a table saw and were ripping cabinet sides very accurately getting the template lined up and parallel to the edge could be a hassle if you were setting the template by indexing from the front edge and the back edge both. Better to do it all from the front edge if possible, imo. I got some 5mm pins and made a template to position the template a given multiple of 32mm back from the first row, but rest assured the manual gives no indication that this could even be a concern. Perhaps Mafell intended to extend the product line, perhaps not, but it doesn't make 32mm grid drilling quick. Positioning the templates for that kind of precision is fussy . The Festool at least has a stop system that's comprehensible, even if it can't reference everything from the front edge due to the short arms on the stops.
Schmidt32 references everything off the front edge. Easy peasy but not so portable and not a joinery system like the Mafell.