I've done a four week camping trip with my bike packed like Doug's.
I prefer less weight while on a bike even when on pavement.
Bill
Weighing in at under 150 pounds and a short inseam, I prefer the bikes to be lighter, like Bill.
This involves packing rain/warm gear, extra footwear etc in one pannier and clothes in the other side case. The top box is pretty much empty except for snacks and other small necessities that are needed on the road. This keeps the bike light and very manageable.
Camping gear? It follows behind in a small one wheel trailer, when other than in a strong crosswind, is not discernible.
If I am on a trip which involves a series one night stays, the trailer is left at home and a small two man tent is strapped across the pillion seat.