Honing a design which has been improved over the course of many years takes money, time, skill, and dedication.
This surely is the case for the hourglass clip we've all come to know and love.
Simply lifting this design without any notice, consent, or agreements in place is rather tasteless if you ask me.
I was unfamiliar with this product, but after looking up some images I can agree on this being a blatant copy.
We're talking about a USA based manufacturer with a large production output, so laws differing (China for example) is no excuse here.
I can definitely see this being a cause of frustration.
I'm not a fan of company ethics like these and tend to look for alternatives instead buying from such companies.
I've snapped some pictures of a PM2 for anyone wondering what this is about: