1. No, if the opportunity for transition baskets off of turnovers is there, your offense will take advantage of it, even if you don't do a fast-paced offense.
2. Same thing continues - you'll keep forcing more turnovers, but you'll also potentially be prone to more layups inside and more open looks from outside. That's why I like matching a press defense with at least one shot-blocker inside and one ace defender on the perimeter.