Here's a new one I built up recently, similar idea to version 2 of Anton's Shogan up above...
It was a fairly beat up old Trek 420. I swapped the fork with one that came from a Rawland Stag, and added braze-ons for MAFAC Raid brakes, rack mounting, different brake cable routing, dyno powered lights front and back, and a few other details.
It's not quite done yet. I think I'll probably thread the steerer and switch to a quill stem for purely aesthetic reasons. I also plan to eventually replace the Soma porteur rack with something a little lighter and more elegant that I'll build myself when I find some time.