Given that this is The High Road, and Art's Grandma might be looking in, I will refrain form saying what I think of serrations on the front of the slide. As I understand it they were first thought up by the gamers who had optical sights mounted on their play-toys and couldn't reach the rear serrations. I don't need serrations of any kind to press-check my pistols because I don't use full-length guide rods. However, as someone pointed out, it's a matter of choice - and that's the way it should be.
As a matter of interest, Browning's first .38 pistols were checkered at the front of the slide and did not have rear serrations of any kind. But the checkering was changed to front serrations, and these were soon dropped in favor of rear serrations.