I always have the idea that I get knocked down by about 1/3rd of the swings of 1h maces. Probably I mostly forget about it when I don't get knocked down, but they knock down to such an extent that I've been thinking of switching to one.
What I hate about knockdown is the hit-knockdown-hit-kick-hit combo that increasingly more people use. That gives them 3 hits for the price of 1. Getting hit the first time is your fault, but the other two are completely out of your control. 2 hits for the price of 1, okay, but 3 is crazy and almost always a sure kill.