Pickpocket: that's a very helpful distinction: "intent does not mean committed". I don't know if it is generally recognized, however. Some people are more literal than others, which is why I think the maxim "only draw if you intend to fire" is problematic.
Model520Fan, you have a disparity of force defense; hopefully, so do I, even though I refuse to be labelled an old fart, (except in court, if it helps)
Unfortunately, disparity of force does not, in my understanding, permit one to draw earlier when threat is feared but intent is not yet evident. Invention_45 has the right idea: make whatever preparations you can short of brandishing if you sense danger, or the potential for it.
This is an informative discussion on one of those troublesome gray areas. I hope discussions like this help others to see us as thoughtful and responsible, rather than persons to fear.
C
Seeking Knowledge, Hoping for Wisdom