I have kept Gonocephalus grandis, and had a few babies hatch. I have never had so many problems with a certain species before - from respiratory issues and mouth rot, to having to hand feed for over a year. Mine were WC though straight from Malaysia.
They are not too difficult, but of course you might run into the usual WC problems - parasites, stress, eggbinding, etc.
I got an adult pair about 2 years ago, the female is still around, the male died about 15 months after I got him - in my efforts to keep humidity up, a respiratory infection got the best of him. And now the female has a mild case of mouth rot.
They do best in high humidity BUT NEED GOOD VENTILATION, the babies are very difficult to keep alive also. I had to hand feed them for 3 months, and then only one made it to 6 months, and that one died of mouth rot. The high humidity is the toughest issue.
They seem to like room temperature, but will bask for short periods throughout the day, I gave them 85-90F basking spot.
The two adults initially did not eat on their own, and I have had to hand feed them both (and the female still) with tongs. Personally, I think they eat subterranean grubs in the wild - both the male and female would dig if they did not eat for a few days.
They're beautiful though, both the Gonocephalus and Acanthosaura genus are spectacular display animals.
If I had to compare them to keeping other reptiles, I'd say Emerald Tree Boas, Dart Frogs, and Quadricornis chams. They're a slim species though, so don't be worried that they look a little skinny - it's just how they are.
UVB 5.0 is also essential for this species, and I would also recommend d3 once or twice a month.
I noticed they prefer to sit in slow flowing water, and a water feature is beneficial. They poop in ONLY in the water it seems, so a removable tub or some efficient way to clean the water is highly recommended.
- it's like a large water dragon. The price wasn't too bad either! Oh, if only I could win the Lotto, lol! I had one of those 'OMG! I MUST have it' moments! 
