I hate cleated soles for various reasons. I fish out of boats 90% of the time, and anyone I know and myself would murder someone who climbed into a boat with cleated soles. Obviously rafts would be punctured.
Step on your fly line one time, and it is sliced in two.
Then you get to the noise factor.
They are dangerous on certain types of surfaces and can lead to injury.
They damage the streambed.
Far too many reasons not to wear them.