I'm not going to read the article, but I am going to answer the question asked by LordArtemis.
Yes, it has, but not in the way one might expect, and the way it changed my mind will probably be made obsolete come 3.0 and Disciplines. The thing is, there were many trees I was unwilling to invest in, because they took a very long time and effort to develop their full identity. 12x XP allowed to me get past that slow, awkward phases quickly and get into the good parts of the tree in as few fights as possible. It also allowed me to "double up" on certain classes, because I wanted to go through the other sex's romances, or choose some small stuff differently, but the major difference was how quickly I could go up the trees..