I have rooted cuttiings of N. maxima 'Broad Peristome' x 'Celebes Striped'. The parent plant started as a cutting from a plant someone else grew from ICPS seed and the peristomes get almost black if grown in strong enough light (they don't get that in my house/yard).
I potted the cuttings in mid-Feb and they've been outside for a while since I uncovered them, so they're definitely rooted. New growth has just begun, so they don't look like much yet, but they'll grow quickly. I have two pots with two cuttings (~8" above the pot) and one pot with one (~4" above the pot).
I don't want another Nep, but will consider heliamphora, a group of interesting VFTs (not just single standard VFT) or hardy Drosera, hardy cacti, hardy perennials, and other things I can't think of at the moment.