NWS is armed at decent.
It is activated with the PB on the power lever or by the right speed lever in the low position.
On the landing roll you centre the rudder and activate it though 40 kts with the PB. After which you call for speeds low.
If you are holding off rudder and call for speeds low without engaging it with the PB you scare yourself silly.
The metro is an honest ship. Anyone who knocks it never flew it. Metro drivers are well regarded in airline interviews and generally pole the sim check with ease. After all, a 737 classic sim feels like a metro once you get used to large pitch changes with thrust.
There has been plenty of metro drivers taught the NWS quirks the hard way. Myself with 4 years on type included.