Larry,
I have an N. Rocco X Fusca which I have grown successfully in my lowlands terrarium. I have a nagging huntch though that it would do better in a cooler environment, even though my tank is not as lowlands as it could get, it's not quite an intermediate either... but almost...
In recent months my Rocco X Fusca has been in decline, seeming to hold on... but I have had quite a few problems, including fungus, and I am not sure if it's problems are related. I am in the process of procuring some of those tasty pasteurized crickets from Phil and Jeff, as the plant hasn't had a substantial meal in over a year (I know, I am a bad parent) we'll see if it picks up after that.