Do it, if only for the option of having a Herbie in the near future. :rock:
Halfstack should be ok for at home - depending on how close your neighbors are....I actually use my 4x12 as a 2x12 so my neighbors won't kill me... :D
I actually talked to Peter S. about that when I bought my new cab, and he said that the fl V30 is more suited for metal, but oh well...
I played them both and the G12 cab, and to my ears the V30 won.
The only thing that changed is the external bias afaik - I think Peter commented on this a few times already...maybe the search will yield results for you?