yes, sorry to tell you that lots of people have thought of this and done it in the past
Less people seem to be doing it these days as 1.) it's really not enough room for 2 hamsters, just because something is above this minimum that everyone quotes it doesn't mean that a hamster will always thrive in a space that size and 2.) there is always the chance that the divider comes away (not 100% sure how people secured it). Personally, it's not something I would risk with my hamsters.
Good size for 1 hamster though.