I can't see any visible signs of wear. I think the final clear coat really sealed everything in.
The cabinets are no maintenance required. I've wiped them down as needed to remove any food splatters and dust. Some have even been banged a few times. The real test was the outside of the island wear the bar is. Whenever my daughter sits there, there's constant bumping and kicking and even that spot doesn't show any wear.
One issue I do have, which is not related to the cabinets but the hardware, I tend to bump my hips on the pulls. They stick out a little and it took some getting used to.
I would highly recommend the kit. Sure, it took some time, but the efforts have paid off.