I have noticed that the slide serrations on modern handguns like the Glock, Walther PPQ, Springfield XD and XDM, Kel Tec handguns, H&K usp, S&W M&P and others have more spacing than older guns like the 1911, tt33, Browning Hi Power, and Walther p38. What is the advantage of making them further apart as the older style seems to be easier to grip, hopefully it isn't just some cost cutting measure?