Most GWC's I dont think know what a release form is, or they print one and then when she shows up with boobs n stuff they forget. Its not that they dont have a brain, its just that they have penises too and only enough blood supply to run one at a time. I shot with a model a few months ago with 2 shoots under her belt and had never seen a release. She did inform me that her previous shoots were at guys homes.
I shoot at my house most of the time; in the garage but still at my house. I can't afford a studio. I'm not sure what the location has to do with a release.