I will definitely look into this further. I like the idea of the home protection though I can live without power at home for an extended period of time. It would likely take months to years for the local power grid to be repaired after an EMP. Though protection against fires from lightning or solar flare related surges would be an additional plus.
I have read conflicting reports on whether or not an EMP would permanently shut down a modern car. But if it does some of my work sites are a two week walk away from my home and family. Would be nice to get home quicker if the grid goes down.