My general thinking is that it's a photo tour in Haines AK with a dedicated guide. The guide will have a vehicle for our tour, so I figure we can leave whatever we aren't using for a particular stop in the car. Since I plan to tip well, I don't mind asking the guide to carry a few things for us. I also plan to refine what I take down to what each of us can carry hands-free (two camera/lenses via BlackRapid Double straps, plus three lenses each via a Shootsac) plus what I can fit in a rolling duffel bag (600, tripods/monopod/heads, lightstand, softbox, light). I'm "done" with backpacks except for what I'd call "true travel" (getting gear out to my car on a normal day, or getting gear onto the ship for a cruise).