This and other threads on actual experiences with some Brompton clones, spanning the time from the first sighting to the desperation in getting rid of the bike, have been extremely educational. They make you run to the bank to make sure you spend your money on a Brompton before you manage to yield to the temptation of getting the clone
.
There are also many Brompton clone users very happy with their bikes. I can think of three on these forums including me. I had a merc.