So far I've used VG in both heated and slow extractions with teas and tobaccos. The slower method provides a more subtle and 'complex' vape, and I use this method for teas. The low heat method works well for tobaccos I've found, at least the pipe tobacco that I've been working with (cheap stuff). The tea will most likely have a bit of a scratchiness to it or a 'bite' to the throat hit after extraction. You can either get rid of it with (as mentioned by boomerdude) a drop of ACV per 5ml, or you can keep that throat hit (like I've been doing) bc its awesome.
Beware though, this stuff is thick. If you plan on using 100% VG flavors, 100%VG nic, and 100%VG base, you will need to cut the end result with ~5-10% distilled water, or else it will be ridiculously difficult to wick.