I have seen 2nm/1000 feet work to perfection several times (in the (real) simulator 
) on various series of 737.
Indeed .. on the 733 it was an infrequent, but regular, end play to be left very high by ATC, or one chose to be very high due wind related turbulence until entering the circuit (over CNS at 10,000ft was typical with a strong westerly) .. 25/gear/idle/limit speed and somewhat better than 2/1000 was achievable .. however, the mental arithmetic machine was running hot all the way down ... let it get away ever so slightly and there was nothing left in the toolkit to claw it back. Naturally one had briefed the passengers on PA prior ..
SOP proscription prevented our investigating 40 in lieu of 25.
Great satisfaction, though, when it all worked out well .. and, of course, one nonchalantly would give the impression that it was all a routine walk in the park ...
However, I guess this sideline is not what the OP was after ..
Mind you, the Electra at 2/1000 still needed a bit of power to avoid going low .. but that is an another tale ..