OK, thanks for all the info and free internet advice!
I agree that the clutch is a wear item and synchros aren't. I'm not recommending it as a daily practice, but it's why I can still drive my truck so it's good to know just in case.
This has nothing to do with FE...although everything affects FE, it would be hard to find it in a test.
Hondas do this very smoothly...if I grind it's surprising. My truck is RWD and has a long throw shifter, so it's harder. Takes longer too, prob the large flywheel. OT, the Honda is easier to bump start too. :hmm:
It's much harder in the lower gears since you want the revs to drop at a very low rate. I basically save this technique for the higher gears, when I'm at cruising speed, not accelerating.
It does save fatigue. All of the driving that I do involves nothing but accelerating and decelerating. I often don't make it into 4/5 with a more than one traffic light per mile.
OK, does anyone use the clutch to come out of gear? Coz I never do that