Has anyone tried using e-liquid with "herbal"

vaporizers?
I do not smoke but I am trying to help my father quit smoking (or at least e-smoke instead)
My first purchase (before discovering this forum) was a e-cigarillo from e-cig... It just lasted 5-6 pufs... I tried to contact e-cig (3 e-mails without response - it seems that the internal switch has died)
Next week I will receive a RN4072... mail usually takes 3-7 from UK to Spain.
"Herbal" vaporizers seem that should do the trick: some are really cheap (I have seen 50 USD corded models) that advertise temperature control from 130 ºC (for vaporizing eucalyptus leaves) that temperature should be perfect for e-liquid.
Reliability of "herbal" vaporizers seems to be much greater tha e-cigarettes because oils and herbs are heated with a hot plate (metal, glass or ceramic) instead of a coil. What do you know about them?