Yeah, it’s pretty much an autotake in Trident Realm given the generally low defence of a lot of their combat units - thulls & depth horrors especially - and even with the 4+ stuff like wyrmriders and the kraken. The fact that the list also has plenty of regen & heal means the Barkskin can really mitigate lots of chip damage.
Other lists with similar attributes (berserkers in NA, Nightstalkers, succubi in FoA) etc) can get the best out of it.