Does anyone know if they make a 4- way dimmer switch yet? A homeowner wants a dimmer switch on a 4 way system, and of course she wants the dimmer right where the 4 way switch is. I know in the past you could only have the dimmer on one of the 3 way ends, but now I heard you could have a dimmer on both 3 way switches. Anyone heard of a 4 way dimmer yet? Has anyone used two dimmers on a 3 way system? just curious on what kind of switches you need for that and how they work.