First test flight. Improving movement skills & camera adjustments. Understanding gimbal static balance, a fundamental necessity. Operator movement, a skill that improves with practise. I see the G2 as an effective affordable tool, allowing users to work in tight corners that other stabilisers can't manage.
My choice, a Lumix GH3 + Olympus F2 12mm lens, possibly the best set-up for G2. BMPC (my opinion), not so friendly requiring external battery solutions. Retrieving memory card difficult if not impossible when mounted.