Here is an interesting new product from Recover Tactical. The Recover Grip is a two piece, bolt-on grip that attaches in place of the standard grips and covers nearly the entire receiver of your 1911. It allows you to convert any 1911 to accept a weapon mounted light. The Recover Grip can be installed without a gunsmith and without permanent modification. It is available in Black, OD Green, and Desert Sand.
I suspect that finding a holster to fit it may be a challenge unless it really takes off. I have also noticed that the grip doesn’t support the plunger tube like properly fit standard grips typically do but this is not an issue for most modern 1911s.
Check out the Recover Grip at Recover Tactical.