Sounds like a winner to me as well.
I think it's a good idea. Also a 6.5-284 chambered in a long action could be easily rechambered. This would be a way to add life to an existing 6.5-284 with a worn throat.
Also lots of modern 6.5-55s could be rechambered to this.Just imagine. Lots of rifles already out there with worn throats that could have a high performance second life.