My gf has a few Cresties. And, we put a Reptiles Basics hide in one cage to see if it would be used at all. Well, now all her Cresties have one along with plenty of plants and cork tubes to hide in.
Some seem to prefer hiding up higher in the enclosure while others do not seem to mind wedging in a dark spot down low but, all have been using them to one degree or another.

So, providing places for your gecko to hide is great, the design of the hide you found doesn't strike me as particularly useful for Cresties or their owners. More of a novelty than anything but, I have been known to be wrong before.