Willdcard, you'll see a big difference with rudder pedals over the X-45 rocker. AH does pretty much fly coordinated (probably because many people only have sticks and no rudder control except the keyboard) so you don't have to worry about keeping the ball in the center but you'll use rudders a lot more for other things, mostly involving getting the ball out of the center. It should be easier to use slight rudder inputs to dampen out yaw excursions associated with maneuvers plus you'll develop a habit pattern of using the rudder during turns, not specifically to fly a coordinated turn but to increase your roll rates. If you fly with stall limiter off you can easily do snap rolls, it's not as easy with the limiter on but you can still do it. You can also improve your gunnery accuracy, do rudder reversals, slips for landing and counter torque effects at low speed.
Try out Shatzi's settings with the pedals, they're similar to mine but one thing I found with Saitek pedals is the "gain" is much lower than either the rocker or twist grip, I assume the CH pedals will be similar. In other words, you have greater range of motion and it takes more movement of the pedals to get a certain amount of response from the rudder which tends to smooth things out and makes it much easier to make small, precise adjustments.