Dissectors are traps that do a lot of damage, so don’t step on them unless you have some decent armour for each body part. Also if you’re running frail/fragile, steer clear.
Light survivors’ suit used to do the job, but I’m not how the Armour has been re-balanced.
Good for training tailoring though, unless you’ve got a high dodge and light step.
As to torso encumberance I’m not sure SWAT armor layers well, so there might be bonus encumberance/layering penalty from that. Not really experimented with the new encumberance system a lot yet either.