Yes, we have these! They are awesome.
You may want to hide the plug somewhere. For us, that involved drilling a few holes in the cabinets so we could thread to the nearest outlet, which is also located inside a cabinet (a GFCI above the microwave). It was fairly straightforward.
The other thing to consider is how you will adhere the lights to the underside of the cabinets. I know we had some issues with our initial solution and the lights started unsticking themselves/falling off on the ends, so we adjusted accordingly.
We've also used the round Dioders to illuminate a bookcase and love them (though they took a bit more though in terms of how to hide the cords).
Good luck!