You'll wan't a flange of some sort to attach a hose between the SDD and the drum, you need a strong support for the cyclone, and to be able to remove the drum easily. I used a short run of 5" flex hose, and I cannibalized a plastic blast gate, which you can pop apart into a pair of 5" flanges. One got screwed to the underside of the plywood mount for the SDD (just like Ty Moser/Monoloco) and the other got glued to the top of the drum/can lid.
Back when I was doing this regularly, I was using a Bosch adapter VAC003 that connected to my Craftsman jigsaw and routers. The nice thing about the Festool hose adapter on the end is it has a rubber O-ring. Doesn't help with an adapter coming out of the tool, but at least you won't lose the adapter.
Chances though are high once you use one of the Festool CTs and a Festool tool, you'll want to start switching over completely. I resisted, I failed.
Permanently attaching a good adapter to each tool would work as well, even if it is just with some tape.