Ok. My experience FWIW, regarding the torso first;
I feel more protected in a neat fitting pressure style suit than I do a plastic roost protector.
Though, I cannot stand clothing and labels that prickle me or tee shirts etc that are too tight around my neck.
I had a 661, hot and everything I hated. A truly euphoric moment when I sold it for half of what I paid.
I have got a Dainese "netting style" pressure suit as well. I don't like it either
I bought one of these after busting my shoulder. Pic is link.
For me, the hunt is over. I love it. The adjusters are all within easy reach and they are so easy to back off when it is time to remove, the easiest one ever to get in and out of. The kidney belt is removable as is the lobster back spine protector.
I wore it alone, straight on my skin at the late in the year Gloucester Vinduro. I removed the spine protector and run a $19.99 Aldi hydration pack in its place. I did 8 continuous laps in 41deg heat(in the shade). That part of my body was very cool and comfy.
If that part of me made any sweat? I certainly didn't know it. I think maybe the sweat was used as a cooling agent as the air flow evaporated it?
I rinse it quickly with mild detergent in a fish box. Rinse it again. Put it on a decent coat hanger and hose it off.
When you are on a good thing stick with it.
If I could spare the bucks? I would buy more of them and store them.