[Question] Usages of non main thread to register an Updatable to a BaseObservable?

Hi, I know BaseObservable checks for the calling thread to be a Looper thread, but I'm wondering if there are real use cases where this thread would not be the main one since using a Looper Thread properly outside an IntentService is not trivial, and using IntentServices with Agera doesn't seem obvious to me.

If anyone using BaseObservable outside of the main thread, please reply here, and explain why.

Thanks!