I can see that one might want to embed this into a workbench if you had you had a really long one down the side of your shop...
I guess thought that you would have problems then getting the featherboards etc in from the side, and making various adjustments. I did do this once with a triton router table top, where I did not have the base for it, and sort of worked ok, except I had to have the table higher than the surrounding bench.
I think if you really really want to build a router table into a workbench you are better off doing it yourself.
Also, isn't that router table ALWAYS on offer? They should just own up and cut the price permanently ;-)