I am pleased to report that the fueling is spot on with the O2 sensors out of the loop. So, to be clear, if you install the upmap with your Termi, YOU MUST DISCONNECT THE LAMBDA SENSORS! I chose to just leave the sensors in the headers since I didn't have plugs. Leaving the sensors on the bike means you have four connectors dangling in the breeze. I snipped off the fingers from a nitrile glove, covered the loose connection and secured it with a zip tie and tucked them up out of the way.
This is a good outcome because I'm taking the SSS to Grattan tomorrow for its maiden trackday. Wouldn't have wanted dodgy fueling to ruin my day.
One final comment on the upgrade; the combination of the richer fuel mapping and 20lb weight loss makes corner exit much more forceful. Overall the bike just feels spunkier, ready to party.