I imagine these are the next step in the evolution of reptile enclosures. Being 100% plastic that does not break down with exposure to moisture and has seamless welding to keep moisture inside the enclosure it would be perfect for amphibian habitats too. I bet GTP enclosures would be the perfect application for enclosures build with these materials. You could use all sorts of different glues that would be great for use with PVC that could be used to attach various things like dowels and fake branches and even hide boxes attached to the ceiling. Much easier with chemical welding with plastics...wood tends to be a tough one, but with plastics it becomes a whole lot easier as there is no mess with nails or wood glues - and the bonus is that plastic glues are actually chemical welds so unless something was really wrong with the bond things will never come loose.
The only issue with acrylic perspex is they can craze (thousands of tiny cracks/splits) that over time can eventually destroy the structure. This happens over a lengthy period of time, but there are solutions such as using laminated anti-crack perspex panels that will not break even if they have crazed to the point of being not being able to see through them.