What I would do (though many wouldn't) is just use leather for a standard railed 1911 and let it stretch a bit. Also, Old Faithful holsters said they had molds for Sig 1911s and its a nice product at a sweet price.
.Any knowledge of holsters that will fit sig Tacops 1911, with light. I'm new here so if one has been posted I missed it.
.Please don't misunderstand what I am saying. This is not meant as a flame.
When I purchase a new firearm, I look at what accessories I will be able to get for it before I purchase said firearm. That includes holsters, magazines, lights, etc... I have too many that I bought and could not get the correct holster, then the firearm stayed in the safe until it was forgotten. That money could have been used for something else.