I've also used a Marianne leaf die and a butterfly die. These thinner dies did not cut so well despite as many shims as I could get through the Bug and I ended up cutting them by hand. I also cut some Elegant Florishes from a Bigz die.
I just love these leaves even though I had to cut them myslef
I then tried using the acetate from a Sizzix Bigz die and an embossing folder. These were both thinner than the Modelling Film but still wouldn't cut through unless I used a Bigz die. The results were slightly more fragile than the Modelling Film but perfectly OK. The great thing is that if you don't like the shape of it, you can just reheat it and shape it again. Now I just have to make something to use them all on