Most probably Loom will not be is relevant for Kotlin Coroutines, Kotlin Coroutines is compile time feature (which is also works on all Kotlin platforms), you don't need any runtime support from loom and no real reason to reimplement it
But some integration of course possible in future
Loom converter for blocking calls may work in Kotlin without additional changes, otherwise it would make them useless for all existing JVM libraroes, so I don't think that any integration is needed
Anyway, it's too early for now to be sure, loom is not even close to finalization