That's a big pitcher for such tiny leaves.
I like the villosa alot too, but I do not want to keep a plant that I need to get it down to 50 degrees at night.
I do have a terrarium, but I do not like plants in terrariums. I have my ceph in it, along with a few leaf cuttings from it. The one ceph is getting some size and I might move it out to see how it does as a house plant. I've been surprised at the plants adapting to my house conditions and growing.
It can be grown as an intermediate instead of a highland plant. In all actuality the N. Nepenthes 'ventrata' ( alata x ventricosa) is a highland plant along with Nepenthes 'Emmarene' (khasiana x ventricosa). Which grow great for me as house plants.
Nepenthes species elevation
http/www.cpjungle.com/nuspecies.htm
The hamata...., I think once it settles in, after losing all the pitchers and a few months, will adjust, I hope. In a few hours of having it, most the pitchers have there lids down. I'm not surprised. The shock and lower humidity, I'm expecting to lose most if not all my pitchers on the plant. Same thing happened to my ceph when I recieved it. In 2 days the pitchers died on me.
I've heard you have to be very carefull with small hamatas, around 3" and smaller leaf spread. Once they get to 6" leaf spread they can adapt to lower humidity easier. I was surprized at the size of the plant, it has a 6" leaf spread, so I planted it in a 14" coconut lined hanging basket and moved one of my other neps, it's going to work with me tomorrow, and hung up my hamata. I also have hope from talking to someone who grows her hamata as a windowsill plant. When she got it, it had a 1 1/2" leaf span, talk about a tiny plant, and been growing it there a little over a year now.
I would not try growing my hamata as a house plant, or many other CPs, if I did not have a humidifier on my furnace. In the winter my humdidity was very low. I saw signs of stress on my Nepenthes 'Emmarene' (khasiana x ventricosa), as some dark spots on a few leaves. This winter will be better since I installed the humidifier in late Jan.