I will have to look but I think the dies may work in either machine. I know I use other dies in the sizzix one from other companies.
I have seen it used and I am way faster with my rotary cutter and ruler for basic shapes. I can see using it for appliqué shapes as it would be so much faster than hand cutting them. Plus the dies I feel would limit the size of blocks that can be done. ( unless you buy loads of different sizes) and the scrap left over from using it concerned me somewhat. I am pretty frugal with my fabric. And I know from using it a lot on paper that there would be a fair bit especially doing certain shapes.