The new replay system for the 2014 season is being used in spring training games. Monday, there were two reviews within only a few minutes of each other, marking the first uses of the new system.
Blue Jays manager John Gibbons challenged the on-field call that the runner was safe due to the first baseman's foot being off the bag. The review took around two minutes -- per a Twins beat writer -- and upheld the on-field ruling of the runner being safe.
Minutes later, there was a review in the Diamondbacks-Angels game on a caught stealing call. Angels manager Mike Scioscia challenged it and again the ruling on the field stood. This one again was relatively quick, especially when you consider how long on-field arguments might take:
The overwhelming majority of the complaints about expanded replay seem to be because some think it'll drastically slow down the game. The two replays Monday seem to indicate it won't take too long and we also have to keep in mind that these were the first two uses. As the season progresses, familiarity should probably make things speedier.