@bocephus,

That depends on whether you want "bleeding edge" or "slightly older but more efficient".

SCCU-Thumb is based on CSSU-Testing and is (usually) one step behind. That means that you can have packages in Testing that are more up-to-date than their Thumb equivalent. I would say, unless you absolutely need the update for some reason (the recent A-GPS certificate update comes to mind), then wait until freemangordon catches up and updates Thumb with the Testing updates.

Of course, the final decision is yours.