Yes.  The riding-style sitting posture makes it easy to preserve a natural, upright posture, just as if you were standing, but without the fatigue and stress on your legs. You experience less fatigue and greater energy when saddle sitting than when using a conventional ergonomic office chair.

In saddle chairs with an open center (e.g., 2-part seat), it is even more comfortable to sit for long periods of time. Because of the gap, there is no pressure to your genital area, thus there is no need to tilt the pelvis back to relieve pressures. Tilting the pelvis backwards causes the back to slump and round, which is harmful for the spinal disks and overall health of the lower back.