Terry,
Paddling pants are like waders without feet. You can try to go waterproof on the feet or not, depending on the weather and your preference.
I asked because I don't like being wet or cold, and often wear waist high waders in my kayak. I am a little concerned that this could be a drowning hazard if dumped.They also tend to hold air pockets, which can be uncomfortable.
I did take a dramatic spill one time with chest waders (with a waist belt). Even though I was in the water a minute or two, I was dry. No water got in, but it got me thinking.
Gregg