I own both and without hesitation the 6x284 is a worse barrel burner. I have burned up 2 6x284 barrels and my 22-250AI's are still O.K.
My first barrel was a 1-10" twist what a waste, to make this cartridge work you need a 1-8" or 1-9" twist barrel so you can shoot the heavy VLD's
With a 1-10" twist shooting medium weight bullet's you give up next to nothing in velocity going to a smaller case, but gain significant barrel life (unless your moniker is Wildcat).
It takes 43 muscle's to frown and 17 to smile, but only 3 for proper trigger pull.