Yes it will last regardless of commercial sales reloaders like it. 6.5s have really taken off in competition .260, 6.5CM, 6.5x47L, and 6.5-.284 are all very popular among competitive long range shooting. With hornady behind it i don't see it going away for some time, even then it will carry because of reloaders, much like the .260 has. Though the .260 is making somewhat of a comeback due to competition.
Then I heard the voice of the Lord saying, "Whom shall I send? And who will go for us?" And I said, "Here am I. Send me."