Truth be told, I do very little maintenance on tour.
Same here. I also do very little maintenance while not on tour. Boschield for the chain when it "feels/sounds" a little dry, minor adjustments for brakes and gearing only as needed, and change the chain (with a cheap, i.e. $25-$35 one) approx every 2000 miles. the exception to this is when things get dirty in the winter. I ride where there is sand and dirt put down for winter traction, so after a wet winter ride I hose things down with nonpressurized water and relube. I also clean the rollers on the derailleur and soft brush all around after wet and dirty rides. I find minimum maintenance gets just as good results as my old style which was much more continuous and obsessive cleaning.