Hey Dweste, this topic has come up before, IIRC.
I don't have a pre-assembled bag. I have my camping gear, then next to it a large tupperware filled with extra food, water, blankets and some tools. There's an extra case of MRE's in the garage with that "pile" of stuff. In my house are a couple of pallets of water, with a few 12-packs of ramen and some other extra food, stored in the pantry in the back so it's not used with the regular food. There is some gear that isn't quite camping, or BOB, but was bought for long-term situations in mind (5-gal gerry cans, for instance)
There are rudimentary kits in both cars.
The idea being, there probably won't be a situation in which I literally need to get the bag and RUN. If something is that catastrophic and fast paced, being in a car will probably be better anyway.
I'll probably be able to afford the time to throw the tupperware into my pickup, walk 8 feet, get my camping gear, toss it in the back, grab the dog and go. I assume my wife can walk by herself. And pick up the water and ramen on her way out. Literally I can be out of the house in 2 minutes - assuming, of course, I'm at the house. If I decide a gun needs to come, that adds on another minute (mainly thinking "hmm, which one?").