Featherweight Smoke - Now With Sleeve-y Things!

My second Featherweight Cardigan is zipping right along! I've now got the stitches that will become the sleeves on waste yarn while I finish up the body. I looked a little bit through a couple of my stitch dictionaries at possibilities for the neck/front bands. I've got a couple of ideas for that area, but I'm thinking I might need to swatch in order to decide what will work the way I'm thinking. It just occurred to me (while I'm sitting here in my pajamas typing this), that it might be fun to do a Featherweight in a standard, non fuzzy fingering weight yarn (like this one) and do the front/neck band in Kid Silk Haze in stockinette, but instead of just working a few inches, work it really wide so when you wear it, the KSH drapes around your neck and hangs more like a scarf. I wonder if that would work?