While on the subject of third-party accessories, some of them indeed are helpful, such as increasing the stability or capacity of the Domino machine. But things like the Domiplate that restricts the machine to certain sheet goods have me scratch my head. The machine handles any sheet goods (1/2" & 3/4" included) very well without any clutches needed, but most importantly, the Domiplate must be removed before any mid-panel mortises can be milled, an unnecessary, extra step.
The Domiplate does not produce centered mortises (because sheet goods can vary in their thickness among batches) even if centered mortises are wanted (for whatever reasons), and it doesn't make the mortising process easier, quicker or simpler as compared to the use of the machine fence.
But as the saying goes, their money, their say, even if something may go against logic. [tongue]