I have the Res-Q-Me pocket tool and I think they're great. I got two so I could really test one out. So far I've not found any side windows that can't be shattered with this little jewel.
Keeping my ageing Renault Scenic on the road requires the occasional visit to the scrapyard, so I can find lots of wrecks to test on. I can tell you now it won't even touch to windscreen so don't bother. Some rear screens can be shattered, but most will create a fist sized hole, which you can they open up yourself with whatever comes to hand ( taking suitable precautions of course this is glass we're talking about).
In allmost all cases the side windows just simply disappear. There's no effort involved with the Res-Q-Me, just push and bye-bye, no more window. Ok this works on all the European cars I've "tested", can't say about US cars as they are too few over here.