The Swift is TIG-welded cro-moly steel. The build includes upright handlebars, Brooks saddle, internally geared hub, front and rear drum brakes, dynamo lighting, fenders, chainguard, rear rack, and a cafe lock. The curvature of the top tube is executed nicely, and the welding is very clean. There are no dress guards, but nowadays it is becoming easier to purchase those separately. The lack of a full chaincase could be problematic for those who want one, but others would consider the chainguard sufficient. Everything else you might need in a transport bike is included.
The dynamo headlight and tail light are custom: DBC fitted what I think might be SunLite casings with LEDs and turned them into dynamo driven lights with a standlight feature. It's a neat system and the lights are very bright.
According to DBC, the Swift is meant to be comfortable and non-intimidating even for those who are new to bikes. In this respect, I think it is a success. At the same time, it was designed to be more maneuverable in traffic and easier to ride uphill than a Dutch bike. In this regard however, I am not sure that it feels much different from my traditional Gazelle. It is definitely lighter and somewhat more maneuverable, which some consider a plus for American streets. But it did not strike me as necessarily "better" than my Gazelle - on which I handle traffic and the local hills just fine. It seems like a good bike though, and whether one would prefer it to a traditional Dutch bicycle is a matter of personal taste - just as whether one prefers lugged vs welded frames.
men's version. I should note that the men's and ladies' versions of the Swift are completely different bikes, designed by separate teams. The angles are different, the proportions, everything. So while my experience of the ladies' model was positive, I have no idea how the mens' handles, and the Co-Habitant's feedback was vague. When it comes to city bikes, I think he is a creature of habit and prefers his Pashley over pretty much anything else.
DBC joins the likes of ANT and Geekhouse. The work of all three builders is different. If you are in the area, try them out for yourself!