As defined by the text on p. 135 of the /Player's Guide/, Innovative allows a character to purchase one professional ability from any basic profession other than his or her own.
I assume that acquiring the Innovative edge during advancement requires that the chosen professional ability be purchased as well, using all five of that character's picks (two for the edge and three for the professional ability).
Does the purchase of this trait during character creation give a character the chosen professional ability for no cost, or must the character buy it using advancement picks after play begins?
Michael