I have a custom woodworking table on my drill press. I use it 75-80 percent of the time. But it feels like I am constantly removing it to do some odd metal work or something the table doesn't support. When done, I have to reverse the process and replace whatever accessory I needed with my wood working table setup. Not the biggest problem in the world .... but it always takes a few valuable minutes to swap out.
With this setup I have a second tool surface that allows a rapid exchange. Now I never have to remove and reinstall my wood working table. I don't have the $ or space for a second drill press, so for me it's great.
In the video you can see how smooth the rotational action is. The guide pin system locks previous positions in with great accuracy. Usually I leave the second surface open, but in this case I had a low cost cross slide vice on it.... so I just left it in place versus removing and storing.