Mid-range leaning chair
We prefer the Locus Leaning Seat for one reason - the footrest on the pan below. Standing on the Mogo or Mobis, your feet are flat on the floor, ankles mostly straight. We've agreed that the footrest gives a little more stability, and is a more comfortable to lean.
Overall we give the Focal Mobis a 4.4/5.
The purpose of leaning chairs
Leaning against a leaning chair or stool allows you to get the benefits of standing without getting as tired. It puts your torso at a 135 degree angle to your torso, which helps you keep good posture. People that lean at their desks report the same benefits as people that stand: increased productivity, energy, better mood, and weight loss.