Absolutely. Signs of divergent evolution are certainly visible in Nepenthes. As an example, the group of mirabilis forms found in northern Queensland, Australia. These are Nepenthes all specializing for survival within the slight variations of habitat in the 'wet desert'. Even rowanae is showing a fairly wide set of variations. Same could be said about the smilesii, thorelii, kampotiana, anamensis, now add Viking. Personally, I believe this is a snapshot of Nepenthes evolving and moving into a monsoonal zone, all most likely since the last ice age. They are different from their kin in the pertropical zone.