I can't remember the conclusions you drew about the oxfords with tights and skirt (I liked it), but I remember Angie suggesting heeled oxfords. I found these on the Saks site:

http://www.saksfifthavenue.com.....8071080219

They look a bit more masculine, which I think is the look you were going for, but they have a nice heel, still. Anyway, they are out of 7.5, but they do have an 8. I know you can wear that size sometimes. Just FYI--I saw them and thought of you.