I trust Koda 100% without any doubts. She's always been amazing with her recall, and like Shade's girl Jazzy, always wants to be by my side. I have never had her hesitate or not come when called.
So, if we are in an area where she doesn't have to have a leash on, she doesn't have one on. I want to say, though, that anywhere with cars does NOT count in my mind as a place she isn't required to be leashed.
Other than that, I have never had any worries about her off-leash. If anything, she behaves BETTER when she isn't on a leash (which is pretty near impossible