I've taken my wife (55kg) in the front of our UA a few times. It works but she's not a fan. I think it inevitably feels a bit sketchy in the UK mixing with SUVs sitting at wheel arch height, unless you have access to beautiful Dutch cycle lanes of course.
Austrian cycle lanes are not quite as good as Dutch but pretty good ( fully divided, lit and maintained) at least in our city. I have had my wife on our other cargo bikes: nihola, babo big and on my long tail. But because of the specifics I basically had to order the bike sight unseen.
I've taken my wife (55kg) in the front of our UA a few times. It works but she's not a fan. I think it inevitably feels a bit sketchy in the UK mixing with SUVs sitting at wheel arch height, unless you have access to beautiful Dutch cycle lanes of course.