We have a wild caught sub-Saharan girl and plenty of wild caught gecko species such as Uroplatus. Its stressing enough for them that they are in captivity so I just keep them as wild as possible and don't push them. I only move my animals for cage cleanings, the Uroplatus get a picture taken once or twice a year and that's it. I doubt that youd kill the animal with stress but just empathize a bit with them when you think about handling, this will put you in their frame of thinking.