I don't think it is going to last long, I don't think it gives that much real world advantage over a 30/30. Now if they would have necked down a 45/70, 450m or 444m they would have had a real winner with that added case capicity, but a round that is only approaching the 308 with special bullets and powder not available to the reloader will kill it off because with available powder and bullets it cant be loaded for with factory results.
Just my 2 cents, I hope they have success with it but I have strong doubts.
-TC-