I just finished a 10 day cave class in FL. I wore my Seaskin Ultra suit every day, usually for 8 hours or so.
It was AWESOME. I can only think right now of two things that I wish had been different with the suit.
I still wish it had a front, plastic zipper, so I didn't have to get help with that.
It has these really thin insoles in the boots and they are not glued in at all. They tend to pull out just a little when I take the suit off, so when I put it back on, those insoles are often not laying down flat and smooth under my foot.
And that's it. It was dry. I was warm with only a Seaskin Tech base layer and a medium weight set of Merino wool shirt and leggings. It was like diving in a loose fitting 3mm wetsuit. Just awesome. And it still looks and works like new. The limestone in the caves scratched up my Teric faces and tore up my fingertips. But the suit is still perfect.