Yes, I caved in and ordered a Brompton Folding Bike. Raw Lacquer, lower gearing, 12% reduction, Schwalbe Tires, M6R. Looks like a four-five week wait. Can't wait to get it - thanks for all of you who posted on this topic. I am using it because I frequently make airline trips (19 weeks last year). I have a Honda Element and can easily transport bikes by the car (I have a road, mountain, and hybrid) - but this should be great.
I picked raw lacquer (steampunk!) but almost went with something a bit girlier.
I am thinking of using a currently owned and broken-in Brooks 17 titanium saddle. It took me a year to break in (over 500 miles). I finally gave in and used Sheldon Brown's controversial soaking break-in methodology in this case, involving lexol (which I owned). Rode it every day for a week. It's wonderful. I'll let you know if it deteriorates my saddle.
I was wondering what the opinion is for a B66-67 for the Brompton? It's a more upright ride - I was wondering if that would really be much more comfortable. I have average sit bones for a woman 125mm.