I've used this die a few times and love it! It is so versatile - just change the color and you have a completely new look. Highly recommend.
I have started to use these kinds over cover dies a lot recently, especially when I'm not exactly sure what to do for a background on a card. I love white on white, too!
I love mid-century design and got this die to add to my small (so far) collection. I haven't had a chance to use it yet but I just ran it through my machine so I could at least comment on it's cutting abilities. It did need a shim but that could have been my machine. All in all, I love the design and look forward to having fun with this die.