the Riley Blake flannels are double sided flannels---so, is your soft/brushed on both sides (or does it have a definite right/wrong side?)
it is probably simply a brushed cotton---
and WHy would you not be able to use it in your project? I don't understand that statement- even if it was flannel- flannel is 100% cotton too- and is used with regular (flat cottons) all the time- i would be thrilled to receive something as luscious as one of the fabulous brushed cottons with a fq pack.