If you concede or whatever you still get it. It's meant to fight slow-play. I don't know that it's really the best way to do that. (since slow play is often a one sided affair, anyway)
It's going to be much worse in 6th, since A) we're all still getting used to it. B) There's going to be a lot more rules to argue over. C) 6th seems to actually take longer to play.