Yes, I changed it. And if there is anything I have second thoughts about regarding my transition, it's this. I did it because I wanted to live relatively stealth and it was one more thing that might clue people in. I've since changed my mind. Although my family was verbally supportive about my transition, there were a couple siblings that expressed some concern over the last name change. I'm thinking about changing it back, not for them, but for me.
But, I have to say that my new last name has served me well. It's pretty amazing when you think of it, to completely reinvent yourself.