Like sitting on a cloud
After a month of testing at a rate of 10 hours per day, I can confirm that once the seat has been adjusted (and there is no shortage of adjustments), it will offer you real comfort in terms of sitting, lumbar support, etc.
I would not replace it for anything in the world.
I work in a seated position (3d graphic designer) so if you are sitting for a long time, don't hesitate.