The strips do look cheap and low tech compared to a row of lovely little LED lights, but they are deceptively more useful IMOP.
The lights work great if like greatwhitehunter points out your power source is still available, your a/c is in one piece and its a "straight" forward evac.
These little strips will still be shinning brightly even if the cabin floor has been deformed or broken. Something that will be very useful if you add smoke to that set up!