Rootone works for us. Use gloves. It causes cancer, don't get messy with the stuff.
How we take cuttings:
Use a sterile razor blade.
Cut three leaves worth of stem or more.
Trim the leaves off to about an inch. The top leaf can be a few inches to allow photosynthesis.
Take the razor and cut a few tiny slashes (length wise) in the bottom inch of stem. Only go deep enough to break the "skin".
We sometimes make a paste with the Rootone, othertimes we just dip the cutting directly into the powder. With N. ventrata, N. Coccinea, and some others, don't bother wasting your expensive rooting hormone, just throw the cutting in some mix and it will take.
Take the cutting and place it in a moist wad of LFS. Put in a shady, humid, very stable spot. Do not disturb until you see at least one pitcher - but on the tip cutting, wait for a few pitchers to form before repotting and treating like a regular plant.
This time of year is good for taking cuttings. The days are starting to get longer now. Ultra lowland species may not work until mid summer.
Never had a good time rooting in water - but that's how we do Coleus!
If you all want to see a pic of our cutting chambers - and an established cutting, we'll take a few pics later and post them.