As a Floridian not far from a lightning belt world capital, I also never shower (or wash) when lightning is expected. I remember seeing a photograph of a car with a giant orifice where the hood and window were. Extremely rare, faraday and all, but I've seen some strikes that dignify paranoia and know several people who've lost family to lightning.

I'm more primitive in my safety measures, but that's a pretty cool system you have.

Edit: I also unplug my valuable electronics too, if I'm able. And yes, I've seen all sorts of stuff toasted, from cows to computers.