I swap between my air shock and my coil on my enduro depending on the type of riding and what I am in the mood for. The coil does not like honking up hills but is fine sitting and spinning. It soaks up a lot more on the way down with very good big bump and stutter control. The air shock is better for pedalling and efficiently pumping the trail etc.
Usually choose air shock for trail centres and coil for uplift days. Depends what I feel like. For a week in the Alps I will be running the coil.