I really like this feature. We need one here.
Is this foreseeable in the future?
Would be great IMO.
as others have said, we don't expect it to get much use. the nice part is that you can invite people to join you for a private real time chat if you want to have a side conversation about something. If you don't want to have the conversation in the public side of the forum, you can chat privately with someone or with a small group of people.
you are right though that the feature does not get used much. It's there more for convenience than anything else. IIRC the old SCWF had it as well and it seldomly go used there as well.