Patrick - Very nice enclosure and chams!
Electric - Thats not completely true. Ch. (T.) cristatus is a very different species of chameleon that in many ways should be kept somewhere between a pygmy chameleon and a true chameleon. Very dense, humid, relatively low to the ground enclosures are ideal for them. Further, European cage designs are very different and far superior to any of the glass enclosures used in the US. The ventilation techniques used are well designed for air flow throughout the enclosure and the enclosures are of sizes that are appropriate to these arboreal animals that require space. Here, we use fishtanks with little to no ventilation except a screen top and most are not of appropriate dimensions. Also, many Europeans use multiple solid sides and a glass front, not all sides glass. Most US keepers see glass and freak out but that's because they don't fundamentally understand what is wrong with the glass enclosures and how the European designs are different and how they circumvent those problems. Fortunately, these keepers in the US who see glass and go off are often correct, however, because they aren't looking at European-type enclosures with glass but rather the US-type glass enclosures.
Chris