No one in their right mind would put sharp knives into a sink full of dishwater. I keep my knives on the counter top next to the sink and hand was them separately.
I disagree that dull knives cause more cuts than sharp ones. Not paying attention to what you're doing or not using proper technique is the culprit.
Or "helpful" people dropping sharp knives into your dishwater...I had to 2 x 4 train Shrek on that one.