I've had a bad experience which is why I asked. We followed everything on manufacturers spec and some walls are fine and others either crazied on us or the joints cracked.. Fermacell say that the joints should be filled with their compound before skimming apparently but not all joints were filled prior.. Unsure if that contributes or notbto hairline cracks in joints.
Beware the fermacell, I wouldn't touch this s**t with a barge pole ever again ! Finishes horrible even when it holds up, grainy and uneven imo.