I hope to get a pic later, but I have a N ventricosa that can stand a pruning. There are no pitchers at the moment (northern Ohio isn't known for its winter light), but I can take cuttings if someone is interested. I contacted the wholesaler to verify that it was the ventricosa that I thought it was and they said that they only TC ventricosas, and that a competitor sells ventratas so I have no reason to question them.
If you'd like a cutting or 6 (!), let me know. I'm not looking for anything fancy (although I'd take it!) in return due to the unremarkableness of a TC ventricosa cutting. This would mostly be of interest to somebody that wants to try their hand at cuttings or would like to root multiple cuttings for later use.