I would have to agree with Doug and Dave on this one. Why not just bring power up to your disposal switch from the dishwasher receptical, then bring a switch leg to the disposal. Still one switch. Besides that all of the dishwasher controls are located at the dishwasher, not from some remote location. I do believe this will make for a much cleaner installation. Just think if at a much later date the receptical went on the blink and the homeowner or who ever replaced it without noticing the original tabs were removed. mmmmmmmmmm could serve for an interesting evening.