No problem with this, at all. No DRM means legitamate customers have nothing to fret over, and they even publically said back before Witcher 2 was released that they may choose to go directly after those who pirated the game.
Mess with the bull, potentially get the horns. I'm not going to cry because a company chose to treat their customers like customers, and their petty thieves like criminals. Seems to make a boatload of sense to me. Makes me want to buy a copy of Witcher 2, even if it would just get lost in my backlog.