I've edited my original reply. It's not so clear now, with the additional info, that your home was you principal work place. The facts that you were scheduled for the office once a week and the traveled thorough out the state work against that.
But, "we did not follow that schedule in practice" and "I definitely considered my home my work location", work in your favor. I would claim the exclusion, but that's an opinion, not a fact.
