My BF experience is with New World Tourist and their suitcase trailer. Both products might be fine for a diehard bike enthusiast but not for a person who has no interest of getting into technical issues. If I take Dahon or Brompton, Radical Design trailer, they are products ready for an interested general consumer. My wife would go nuts if she were to take apart NWT for travel and even loading NWT into a car is a bit of a nightmare. Incidentally, this was when I earned my Brompton - we were loading her Brompton into a car and my NWT and she looked at that and concluded that I should be getting a Brompton too - I couldn't be happier to comply.
This is the massive problem BF faces, their bikes just aren't practical to use in comparison to other folders. I just sold a Silk, and the drama involved with folding it up to get it in the buyer's vehicle almost killed the deal. The rear triangle folds under, the seatpost folds forward (rubbing on the plastic bottle cage), then there's a strap that supposedly holds it together as you pick it up (it mostly doesn't). Oh, the handlepost doesn't fold? Ok, let's take it off..now it's dangling there attached to cables and somehow we have to load it without banging it on the frame and scratching paint.
Even the Pakit has a weird arrangement where you unhook the handlepost and slide it into the frame. It's more convenient than the other models, but still fiddly enough to make you wonder why you didn't just buy a Brompton. I'm not sure I understand what the point is of these bikes anymore...