My notes are from a major US airline and explain that there is a system difference between the FD guidance during a normal TOGA and during a TOGA in WS condition.
Your statement from the Fcom is typical of poorly written manuals...it states"on approach/landing on an ils ,the AP and FD will try to hold the pitch and speed" .,basic automatic work and thats on a level segment then,not really on an ils now,are we?
From my notes:
Approaches are generally made with the flight directors ON. When the flight director is ON, the command guidance is to maintain either vertical path or level flight. In either case, there is no windshear guidance. Even in windshear conditions, the F/D will command a return to vertical path up to the point of 25° pitch and reaching full stall conditions. To achieve windshear recovery enhancement flight guidance, the aircraft must be flown in the TOGA pitch mode.
So please next time you fly a NPA and enter a WS,i hope youll press Toga anyways...