I have a similar, not nearly as sophisticated, solution on top of my CT26. It's a simple slab of 3/4" MDF, sized to fit. Then I stapled a few blocks to the bottom, to locate it, keeping it from moving. My CT26 is generally not very mobile. It sits between the assembly bench and the cross-cut station. In use with the TS55, it becomes the parking spot.
Since the time I made this, the situation has changed a little. Now the CT26 is covered, in a cubby of sorts. While the slab is still on top of it, I don't really use it that way anymore. I have installed a very shallow drawer above it and deploy that as the parking spot.
In the pic, it is not pulled out to demonstrate, but you can clearly see both options.
The drawer method could be applied nearly anywhere. I think the sides of mine are 1" or maybe 1 1/4" high, plenty enough to keep it from falling off in all but the worst cases.