The dezeen blog posted this funky task chair by Magis presented at the Milan furniture show. It has a very unusual configuration, with a plank like seat pad, and a blocky back pad with an integral handle. There are several diffrent configurations, a stool, a chair, with casters and without. There are also a family of desks and carts that go with the chairs.
The big question is, how well does this unusual seat and back pad work as a task chair? We've seen before chairs designed with an irregular seat pad shape in order to accommodate different seating positions. Those chairs usually have smooth rounded contours or corners carved away from the seat pad. But this design seems to defy common sense. Again I have to compare it to a bicycle seat, where although it is narrow, it supports the pressure points of your pelvis, and can be quite comfortable. I don't know what the pad material is like, but I'm anticipating that it would have to be firm, but resilient.
Check out all of the 360° at dezeen.