Thanks for the reply. I have a few UPB devices installed as part of a test run. During the test, I encountered several switches where there are no neutral wire in the J-Box. A few of those, I do not see any outlets nearby, so I can not easily run neutral wires into the box. Z-Wave switches doesn't need a neutral, so that's my reason for adding Z-Wave and I am planning on using HomeSeer to bridge between the two technology. I could have gone all Z-Wave, but I've spend some good money on UPB already and didn't want to just throw it away. Also, UPB has more options on switches.