There is no reason you can't produce bar stock in damascus. I don't think most artisan knife makers have a big hydraulic forge hammer to do it economically. Metal foundries don't make it because it's too time consuming and expensive.
You can get damascus steel slides for 1911 pistols, that blank is more than enough to make a GG from... it has to come from somewhere

You gotta pay to play though.
Imeo's machine
shop would hate him for having them machine titanium... there aren't that many machine shops in the world that can do that