They are difficult geckos to sex, but males do have hemipenes. They are just barely noticable. It took me a few weeks to realize (=come to grips with) the fact I had two males. They didn't fight during that time, I would occasionally hear some squabbling and gecko blabbering, but nothing brutal. The smaller male, however, spent most of his time towards the bottom of the cage. I think in the long run keeping males together is a very bad idea because while they don't appear to fight, the dominant individual seems to stress the others severely.
Seeing these geckos eat fruit is quite comical. They devour it like sharks feeding on seals.