We almost always run 2 separate runs one to the ufer with an acorn and one to the cold water pipe ground. Mass. I think has no prob with going to the gas but most of ours out here (CA) are yellow tubing, (atleast where I live) so we just use the water pipe and it doesn't scare the inspectors either. I guess it just depends on your AHJ where you are at.

It does not matter if you win or lose but how you lay the blame :-)