I don't know if the Cricut Expression cuts fabric. It is very popular with scrabookers for cutting paper, but I think the action of the blade could really snag and pull at fabric.
Sizzix used to have a set of dies for quilting shapes that cut fabric, but they are produce relatively small shapes.
I wondered about the effectiveness of the rotary cutter and appreciate the review (won't waste time or money on that).
Cheers, K