Disturbingly easy actually
Remember that you have everything in your hands, you can see how the cover clips in!
There is a plastic edge attached to the leather and it just pulls out, and just pushes back in for reassembly.
Everything is just a snap in plastic piece aside from the bolster edge closest to the seat bottom. That short stretch is the last to reassemble and has a wire through the leather that clips into the base.
Honestly, typing this out is way so much more complex sounding than it really is!!