The standard grand isn't a VV device but, you can use different batter configurations to get other voltages. If you use an 18650, you'll get 3.7V. If you use two 18340s, you'll get 6V.
The VV grands are supposed to come out next month. You'll probably have to be there the minute they go on sale to get one though. That's the way it was with the VV Woodvils and they sold out in a couple hours.