That's a nice setup Bob. Mine is fixed and I move the table up and down instead, but that's because the motor died and I hooked it up to a standard motor via a v-belt. I've also seen one mounted on a piece of plywood that pivots at one end and mounted at the end of a table. A little crude but quick and easy. Biggest drawback is the loss of depth of cut. If I were going to go that route I think I would mount the router inside a steel channel.
Different ways to go. Depends on what tools and skill set a person has.
Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.