I love the idea of this die, but. . .
It cuts through designer scrapbook paper (even thick designer paper), so that the top and bottom flaps tear when scored - to the point where they would tear right off without much effort. It does okay on thick cardstock but then I decided to make a bunch of designer scrapbook paper envelopes. I tried MME, Graphic 45, Crate Paper and lots of other high quality paper brands and every single envelope I cut, the top flap was torn at the score line even before I scored it and the bottom flaps on 90% of them were weak and easily tore off. I was quite bummed.