I don't practice it, but I know what kind of benefits come from it! I keep meaning to work it into my workout routine. It would definitely improve my running (and there is a lot of room for improvement!). Everything you do can be improved with Pilates--even sewing! If your core and stability muscles are strong, they don't tire as easily, meaning fewer aches when you've been hunched over your work all day.
Stick with it! You'll be glad.