C.H.
When I read it, I didn't know what you meant either. Guess that affirms that the term "pinch resistant" in and of itself would not be a selling point. And, since most of us haven't been pinched and don't even know how one could get pinched, seems like the concept wouldn't be a selling factor at all.
Now, contrast that to how many people get pinched by house doors and car doors -- you'd have something there!