Bitcoin Gold doesn't look like a legit fork to me
they want to premine the coins,also they do not have a valid wallet (at least they hadn't some time ago,haven't checked lately)
the idea is great and all-can only be mined by GPUs so no ASICS and big ass fat companies,power to the people
I highly doubt the team behind Bitcoin Gold will make a successful coin
as for bitvest,I don't see any plans on supporting BG,maybe an update will come later from Zodiac regarding this