I tried one of these flexible reading lights over our kitchen, however found the light was not really good/bright enough, and have since removed it. We now normally just hang an ARB adventure light on the side of the camper above the kitchen.
I have plans of making some sort of folding light stand on the top of the slide out kitchen area, maybe with a strip of LEDs along it, and which can be folded down prior to the kitchen being slid away.