Can you put a bearded dragon in a gecko vivarium?

Typically, here in the states, the term Vivarium is used to describe enclosures that feature running or standing water and live plants, these are typically high-humidity setups intended for amphibians and rain forest dwelling snakes or lizards. I have, however, seen some arid-type vivarium setups. Also, I believe in the UK, they refer to most any terrarium as a 'vivi'.

The bottom line is bearded dragons are desert dwellers and require a fairly arid habitat, I don't think a highly humid environment would benefit them, although I'm not sure about the negative effects, I'd imagine there are some.