With the news that the boost boosts two professions to 600 if the character is level 60, I'm now wondering, is it a better idea not to use it on a lvl 1/new character and instead put up with levelling it to 60 so you can get the double maxed out professions?
I can't say that I know how long it takes to get to 60 these days with full heirlooms, but would that be quicker than levelling two professions (say, enchanting and engineering) to 600?
I'm really thorn now and would appreciate advice