They didn't have a Douze in stock so only got to test à couple of bullitts in the end. The first one had only just been built and had the steps ep8 and dérailleur setup with the widest bars I've ever seen. Barely touched the pedals and torque was insane, lots of fun but would be a bit mental for carrying 2 kids in. The gears only worked with the battery plugged in which seems like a crazy option to have imo. The 2nd was with nexus 5, steps e 600 and swept back bars, it felt really comfortable and the pedal assist was barely noticeable compared to the other just easier on the legs without the catapulting acceleration.
I tried à bakfiets long in between just out of curiosity and it's like a cruise liner in comparison I didn't enjoy it at all tbh.
I really want to try the douze (if anyone knows anywhere else in London that has them in stock?) as for à family bike it has a few more options than the bullitt which will take a bit more effort to get right for my needs.