Mine won't go through as those you call excellent. Maybe that's because I don't airbrush that much! But what I tend to do... and this is the downright simplest and easiest option for me. The only things I airbrush and/or rattlecan is the body cowlings itself and the exhausts. The cowling for obvious reasons and the exhausts because you simply can't get the stain effects by handpainting. Very often I do tend to give the base colour for the front disks from can or a/b as well, then handpaint the rest. I know Joel does his with a/b and masking, if I recall correctly.
Same with the one examples you used. The chain I paint in it's base colour and just drybrush the outsides of the links on the appropriate colour. The rest, such as forks and the handlebar detail... occasionally masking, but most often patience, steady hand and re-runs! Don't expect to get a strainght line first time around on the places you don't mask - and get get upset with it!! Just let it dry, take the other colour, straighten it out a bit more, then repeat in reverse, and again, and again... so many times as needed! Most often not all that many, don't worry!
Best of luck - and do show us the progress!
PS - like your dogs! Have 3 labs...