I have kept about 8 species of cyrtodactylus and have noticed that all of them do a bit of climbing. Obviously some less than others. For example, I notice that consubrinus climbs less than say elok or oldhami. So, i think height is importatant in a cyrtodactylus set-up. At the same time, i have kept species in shoebox-style racks, and have never had problems. I'd say if the space is there, give em room to climb. Of course if one studies the wild habits of these species, they are said to be mainly terrestrial, and importers i have talked with say they are always found on the ground(quite possibly because they only collect in the day, when the geckos are at rest.) On another note, from what i have seen, they do not climb in small bracnch structures like a U. phantasticus would, they have always prefered a larger sturdy branch that supports thier whole body. The only two species that i have seen use thinner branches are elok and brevipalmatus(both very closely related) , but they also tend to "prefer" a sturdier branch(like the one pictures above). I have seen pictures, but have yet to see any of my cyrtodactylus species climb glass. So, i guess my point is that i truly believe all cyrtodactylus species are at least somewhat arboreal, and should be kept as such. And just for arguements sake, im talking The tropical/subtropical genus, not their cousins (cyrtopodion), cause thats a whole other story