Having done extensive low light work in LE both with WML and hand helds, for me the WML wins every time. Frankly I'm very unlikely to ever carry a pistol this size or weight outside the house, so I'm thinking of this as a range and bedside safe pistol. Both of those scenarios, for me, call for a WML as a must have.
FWIW, I don't ever "search" with the WML - I have several good hand helds by my bed and around the house (we lose power frequently here), but if I have to shoot in the dark, I'd rather have both hands on the gun. If I can't use one hand for any reason, then a WML is the ONLY way I can PID what I'm shooting at.
Having said all that, my primary "carry" pistols are a P365XL (no light) and an LCR (no light).