There are some pros that teach that the driver and iron swings are quite different and there are some pros that teach they are quite the same. The truth is that you really should have the same swing with every club. However, there are some minute differences between the iron swing and the driver swing. For some people who get too step into the ball, they can pure their irons, but end up popping up the driver. In this case, you might want to create more width in your backswing with the driver to avoid the pop up. Otherwise, the other minute differences are just a change in ball position (more forward) with the driver and absolutely never making a divot ever with the driver as well.