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.
"Combined synergy of a man and rifle is matchless, the steadiness of hand and acuity of vision, and finally the art of knowing how to make the rifle an extension of the body, all equate to the ultimate synthesis of man and machine."
"Death smiles at us all, all a man can do is smile back."