For those of us that have used Neoprene's I do have a word of warning.
Neoprene floats, so the deeper you go, the more buoyant you become. If you are chest deep in a decent current, the odds of you going downstream like a cork go up.
The wetsuit idea is neat, but I would like an overall variety to have movement in my arms. At that point, I'm beginning to side with Gene about it being a bit crazy.
However, I also used to fish for Coho from shore on Lake Michigan in February.
Having a 25degree 30mph wind whipping into your face seemed like a reasonable thing at the time.