That Miter Slide attaches to the top of the router table fence, and if you don't have the fence that they sell it might be difficult to make it fit your fence. I can see where one of these would be handy if the router table did not have a miter slot to allow using a standard miter gauge, but I see little benefit for it otherwise. The photos show a clear plastic guard over the router bit and this will interfere with the Miter Slide as you attempt to push the work fully past the router bit, so it couldn't be used as pictured. You also need to realize that as you pass the router bit, it will cut into the HDPE piece at the bottom edge of the miter gauge, so this piece becomes a "sacrificial" backer and will need replacing often when you change router bit shapes.
This is just my opinion, based on looking at the photos that you posted. I have never used or even seen one of these in person. My router table has a miter slot and my miter gauge is several inches away from the router bit as it passes. I attach a sacrificial piece of wood to my miter gauge so it can be cut. Scrap wood is cheaper than that piece of HDPE. I'm not telling you not to buy it, just trying to point out possible problems that you might encounter when you try to put it to use.
It sure is pretty though.
Charley
This is just my opinion, based on looking at the photos that you posted. I have never used or even seen one of these in person. My router table has a miter slot and my miter gauge is several inches away from the router bit as it passes. I attach a sacrificial piece of wood to my miter gauge so it can be cut. Scrap wood is cheaper than that piece of HDPE. I'm not telling you not to buy it, just trying to point out possible problems that you might encounter when you try to put it to use.
It sure is pretty though.
Charley