Caught myself while playing the CPU today.
Playing at AI today, I realized that I tend to hit D with my thumb when playing MBAA, but when playing say, an SF game, I go back to a normal sans-thumb kind of deal.
What about the rest of you?
EDIT: Thinking about it now, I actually prefer to use my thumb when shielding, but 214D is more 40/60 thumb/index for me.
-[couch]