You might want to consider waiting for the F1, it will support the offset nozzle guns and there's rumours it will also fit the centrelines. Also, polarstar will make JACK nozzles for any gun for $25 +shipping.
Nice, but don't forget the JACK is more than 2 times more shots for the same air(pressure) than a fusion engine. As I understand it, the V2 and V3 jacks are identical with different trigger boards.
Also, polarstar will make JACK nozzles for any gun for $25 +shipping.