Probably not, as it would bug me to have the same "voice" making noises for each each girl, and giving each of them an individual "voice" would be extremely difficult and add a fair amount of size bloat to the game.
It is something on my "to consider" list for when the game is in its final stages, though. If I can find a good, free library (or get 20+ extremely helpful girls) and manage to compress everything down to what I feel is a reasonable number, then who knows?
Next game I make is going to be designed with voice acting in mind, for sure :)