And yes, a tripod would be out of the question of course, for being too intrusive. The key really is to avoid any kind of formal embellishments, which inevitably come with using a tripod.
I'm using a metered prism with the Pentax. Thankfully the latitude of Portra means I only really have to meter once outdoors, in daylight. The trouble will come with the night shots next week, where I will have to push, and this is where flatbed scans probably won't cut it.