I've seen fake Juices, Squirts, Micras, PST and the infamous fake Wave. Many are blatant knock-offs but I've also seen MTs that are copied and rebranded. Just as Def mentioned, the quality also isn't superb so you should be able to easily spot the fakes.
This is called a Swiss Army Knife. Do you know what Switzerland is? Switzerland is a place where they don't like to fight, so they get people to do their fighting for them while they ski and eat chocolate. - Larry David