They have been seen in the UK, but the USA has two (related) names for them, bum bars and hobo bars, so they are obviously quite a thing on their side of the ditch. If you google 'guidon vagabonde' you get German lesbian handlebars, so there seems to be some kind of connection albeit that the French welfare state provides the homeless with new bars whereas American tramps have to put up with inverted drops.
Up north we had no formal name for them unless it was two-four bars; this referred to them providing a better platform on which to balance 24 stubbies, the largest box of beers you could buy at the time. Or at least the largest you could easily balance on those bars.
They have been seen in the UK, but the USA has two (related) names for them, bum bars and hobo bars, so they are obviously quite a thing on their side of the ditch. If you google 'guidon vagabonde' you get German lesbian handlebars, so there seems to be some kind of connection albeit that the French welfare state provides the homeless with new bars whereas American tramps have to put up with inverted drops.