The only hard shell space suit I know of, NASA''s AX-5, was big, bulbous, and seems to be not very comfortable, although offering zero pre breathing, when entering the suit. What I am thinking, is if the hard shell design can be made into tight fitting suit, that will really feel like a suit, not like a personal spaceship that happens to have limbs.
I don't see how this could be done. Your body does not have a constant volume: every time you move, muscles have to flex, changing their volume. So the rigid plates have to be linked by flexible insets. When you move, your skin will move relative to these plates, creating friction. That's not going to be comfortable.
Breathing is another problem. If you specify a rigid torso big enough to breathe in, the torso has to be pressurized, and you need seals between the torso and your arms and legs. I can't find a place for those seals where you body won't move around, and rubbing against seals pressurized on one side isn't going to be comfortable.
When you make a glove from rigid sections and joints, the joints have to be sealed, again you have a section with pressure on one side and no pressure on the other, making the joint harder to move than an unpressurized joint would be.