OOOOO!
Old Ranger, you just have to see my diatribe against "Sierra Cups" in my "Silly Gear Nominations" post. Hee, hee This post of yours is TOO good for me resist commentary.

Sorry but Sierra Cups are about as dated as the framless, canvas Boy Scout Yucca Packs of yore.

Personally I've been carrying those light plastic camping measuring cups for a few decades.

Eric