I know it's been a while and this may or not be new info, but I was reading on the GV site:

Gear Vendors makes an AutoShift Sequencer that automates the split. You still command the overdrive in-shifts but when you move the lever up to the next ratio the sequencer looks at the command and the tach to pick the appropriate moment to out-shift the overdrive.

I'm about to purchase a GV and I would love to hear from someone who has used this sequencer. I would love it even if you could only use it as a final overdrive, but if you could get some automation and more of a true six speed, that would be absolutely killer.