Kind of a general reply since it's in a few replies ...

Definitely agree that you can over-think yourself, over isolate things, etc. Mainly I didn't want to go into my PSK b/c it's sealed w/ electrical tape. My car was on the other side of the house and I'm lazy - though ultimately I did break it out. As for my wife's kit, I keep an eye on that and occasionally rotate out supplies (food, batteries, etc). But I really hate pulling things apart if I can avoid it.

Maybe I'll just have to adjust my thinking that the car kit is the practice kit. It's easy to repack and relatively redundant (I work in a suburban environment, so not critically important if I lose it).