so be sure to wind it right out of the way or you will find yourself level in seconds and unable to continue the approach.
This is what I mean. If you wind the MCP ALT down to something like 700' so that you can continue in V/S, but then forget to set MAA after G/S capture, what happens when you select FLCH to begin the cleanup if you've already passed this altitude in the climb or initated the G/A from above it? Is there a built in safety feature whereby having G/A as the target thrust means that FLCH will ONLY command a climb, or will the aircraft go into: IDLE | HDG | FLCH SPD because the selected altitude is below you?