Slightly off topic, but the current speculation on character re-spec is that tomes will be retroactively applied since the game does not currently keep track of when the tome was consumed. This is why you can hold off for a +2 or +3 DEX tome then go back and have Fred swap out your previous feats for Imp. and Gtr. TWF.
Will this apply to skill points and a consumed INT Tome? My guess is yes.