i have tried dropping some e-juice on the herb and that works ok but if you put too much on it turns the herb black and mushy and left an unpleasant taste in my INH afterwards.
My thinking is that many companies are trying to develop a portable vape that produces combustion like clouds, has long battery life and preserves the herb.
If a dual vaporizer was developed then it might be possible to vape the herb at lower temperatures thus preserving one's green and battery life but still obtain the massive clouds that those of us who combust feel we need in order to make the transition to vaping complete.
Ultimately I would hope that the aim of portable vapes design would be to mirror those of the e-cig format, whereas at the moment some are a bit Heath Robinson