the problem with kill switches is that most real car theives know what to look for. they can find the switch too. the bottom line is that the more preventive steps (security) you take, the longer it'll take the theif. hopefully he'll get discouraged or (gasp) realize it's not worth it and leave it alone. either way, the longer it takes the theif, the more time you have to load your gun. but, realistically, if a good theif wants your car bad enough, they'll get it sooner or later.
unqualified expert - lost two civics 98 ex 2 dr and 96 hatch to shit head theives.