Anyone who has seen lots of go-arounds on a 777 simulator will note the handling pilot gives a quick push on the TOGA switches and then pulls up to 15 degrees using both hands and looks at the PFD.
I'm not sure where because I have only seen that occur on the very, very rare occasion and when a pilot does it, it stands out out like the proverbial dogs......
If they are taking their hands off the thrust levers during the G/A to perform the manoeuvre then they are doing it wrongly. The thrust levers should be guarded when the flaps are out of up. The only reason the hand comes of them during the take off is to ensure the Capt doesn't reject after V1. As soon as the the jet is airborne, the PF's inboard hand should be placed back on the thrust levers to guard the movement.
G/A - no rejected take off possibility - so it should be one hand on the control column, one hand on the thrust levers. Always. That way they will always know that they have full thrust, without necessarily having to look.
Basic Flying Skills 101.