Yes, 60° bank and nose level, better said velocity vector 0ft/min, means a 2G-turn. Thats how a military pattern should be flown. But as I already said, by the dependence of speed and turn-radius, your downwind to final turn (configured and slow) will of course take some degrees less than from TO/upwind to downwind.
We always fly it that way and it's by far not impossible.
Remember that you will never go into a pattern with a full loaded AC. If you do I'd guess it's gonna be handled like an emergency where you don't need to stick to the procedures that close.
@Geskes: Pls answer my last PM! ;)