I agree with you guys, this method only will work on some species, specially swamp lovers. Mirabilis are in my opinion the most water loving nepenthes I know. Gracilis are known to root in water, but Mirabilis really takes the cake when it comes to wet feet.
1.5 years! Wow that is so fast... hope mine grow that big too... well when it does, I wouldn't know what to do with it

As it will crowd my small garden.
TTFN
Arvin