JoeR pretty much nailed it as to the reasons/differences in the new clips compared to the old. They're still offering the c-clips, j-hooks, and v-clips in the original style.
Here's a pic of the new style of clip:
Any excess/unwanted material can easily be removed. They're available in the 1.25", 1.5", and 1.75" belt sizes, so they should fit on any style of belt that corresponds to the appropriate size.