Back when I did my CPL (1985) it was a requirement to have a valid Night VMC as it was then called to be able to undertake the CPL Flight test. Why the requirement was abolished is beyond me but I am of the opinion that it should still be in effect.
To me the reason is quite simple. Try a take off on a moonless night off a runway into a night time vista as 'black as old Nick's a**e' and you'll soon get the idea. A M/E command IFR rating will not give any experience into such conditions. By the same token, a night VFR landing is 'a little bit different' (my old Instructor's words) to a daytime landing. Therefore I would strongly recommend some night flying training. Of course, others may disagree.
You only live twice. Once when
you're born. Once when
you've looked death in the face.