UG cart and wings.
You can make a docking for the cart between cabinets, fold up the legs on the wings and place the wings on a bench. That way you’ll have calibrated wings work seamless both on bench top and freestanding. As the wings connects to the Kapex, the rulers will match up every time with the Kapex without having to either build a rigid customary bench docking for the Kapex to align with ie bench top rulers. Then you would have to shift the Kapex to another Miter saw stand.
If the scenario of moving outside every now and then, the UG and wings makes sense.
I know, as it will be like that for me later too, that’s why I bought the Kapex as kit with the UG...