"Not too bothered about styling" is quite important. Datalists are relatively uncommon and I think many users may not know what they are seeing and how they can interact with it.
Also datalists appear quite different across different browsers, which is fine of course for a native form control, but annoying if you're aiming for a more consistent look.
Also datalists appear quite different across different browsers, which is fine of course for a native form control, but annoying if you're aiming for a more consistent look.