Didn't want to download the whole chain again, so I copied it to an external hard drive from another PC running Bitcoin XT. Upgrading UTXO database .... 30% complete.
It seems that the WHC token has not been yet been implemented into the QT (GUI) version, but it's accessable from the CLI with whc_* commands.
If you have BCH and tokens in the same address you can just use whc_send. You only need to do it the complex way if you want to pay tx fees with BCH from another address.