Well does he mean the slide cutouts or the small serrations? On the 2.0 the slide cutouts for weight go back pretty far. The small serrations are there for people that like them. However, by pointing them only at the bottom of the slide you run the problem where if you tried to use them to completely rack the slide your fingers will run into the part of the frame that is flush with the slide and then these small serrations are somewhat pointless. You can, however, use them to do press checks if you use your offhand over the top of the slide.