I would think they would have to have a huge enclosure because the temps requirements are quite different for those two species.
At the Los Angeles zoo they just opened a new reptile
House they call the Lair and they have an exhibit that has
Phelsuma m.grandis and uroplatus sikorae.
It is possible but a large tank and naturally dividing areas with hiding
areas for each species is a necessity. I would recommend lots of
research for the requirements of each species you would like to keep. Also watch for stress and or aggression.
Hope this helps
Jon
I tried to keep lineatus toghether with grandis in a 100 x 60 x 250cm (3,3x2x8feet). With the result that I lost the lineatus within a week. The lineatus was full of bitemarks after a night fighting and died. So: bad idea.