Umm.. BKK to some Indian destinations (say MAA) or those destinations to BKK are both paper tix. Their ground handling, ticketing etc are outsourced to AI in MAA - and the guy in the TG office at MAA told me that was the reason they were still on paper tix rather than etix for MAA.

In fact if theres one place on your itinerary thats not an etix destination, it seems to become paper for the whole ticket.