I don't doubt your experience, but with the advanced fabrics and memory metals of shadowrun I'm sure that the bottleneck for comfort and protection has been probably been drastically mitigated if not all together bypassed. I mean, when I used to do long distance dirtbike riding I'd be in the full suit from dawn till dusk, and at worst the heat was a nuisance, so long as I kept drinking water, and that's with technology from 10 years ago.
I should hope that carbon nanotubes and other complex ballistic weave armours have become as light weight as that rig by 2070. After all, if it's not comfortable enough to wear it won't protect you. Of course, bullet resistant armour is going to be denser than the plastic, mylar, and nylon that I wore, but I doubt they're nearly as heavy and rigid as the titanium ceramic NXRA armour we have today.