Tailored Scallops

I posted about this on the knitty boards as well, and of course I wanted to post my quest here!

I'm in love with the cover pattern Tailored Scallops, and I'd really love to make it in a non-wool yarn since I live in a warm climate. I was thinking of a sub like linen or silk- (a blend?) but something with drape and that can be blocked to show the feather and fan gorgeousness.

I haven't seen anything bulky enough- and the thought of double stranding makes my eyes cross...
Thanks for any thoughts!