I got to put my new drysuit to the acid test last month at a sea kayak training in mid coast maine.
We were put in really crazy conditions, with big waves crashing on rocks all around us untill someone capsized, and guess what? Then we got to practise rescues. Over the course of the day I was in 55 degree water several times and was very comfortable in the water and paddling.
One of the supposed drawbacks to this kind of drysuit with the neoprene neck gasket is it leaks a little, but I didn't experience any leakage.
All in all it was a great day, the drysuit performed flawlessly and I think about big waves and rocks in a brand new way!
I've used it 4 or 5 times in the two weeks I've had it & I love that I can now row in the winter months without fear of hypothermia . It can get warm as I chose to get the nylon (nonbreathable) model but I feel that's a small price to pay to double the time I'm able to row !
I paddle a surfski and have tried various combinations of clothing for paddling in the winter in cold conditions. With this semi-drysuit I like being able to put on wicking layers on top pile pants on the bottom. These are easier to put on and take off than neoprene. But like any cold water paddle clothing it can feel hot and restrictive since I paddle hard when training for racing. Nevertheless, I'll feel safe with this option and will use it from Nov. to March up here in RI.