Its strange not to see more comments since there are a couple of threads around about Hobos.
I remember when young that some camper knives had a spoon and fork but didn´t separate, I didn´t think they were practical, I still ocasionally see some cheap ones like that.
A modern Hobo is made by Richartz in Germany which makes some fine SAK look-a-likes, it is the same size and shape as a medium SAK and has the regular SAK blades along with a separating fork.
Other than the well known Case , Ka-Bar and Mercury (Italy) make Hobos, I believe (but am not sure) that there is a Russian military issue.