GHS had three different sized channels and Bills is clearly not a short channel.

Also the term has been called "tapered clip latch" for many years as it is square cut not rounded like a scoop would be. There are two cuts in the center of the tapered cut clip latch. The term "Scooped" came from the CMPicon web page with the new folks in the hobby a few years ago and seems to be sticking. Rick Bicon