I've tested the Palio balls as well and I agree with their review. I just think they underestimated the higher bounce a bit. The ball jumps up significantly higher after a topspin shot. It surprised me many times.
When the 40mm balls came in, I immediately noticed the increase in "net balls". That is balls hitting the net and going over. I assume that it has something to do with the increased size of the ball vs the size of the net. When I tried the Palio balls, the frequency increased even more. So one skill to learn is how to react to net balls as there will be more of them.
Another great new feature of the sport brought to us by the ITTF.