Front shift-Left*
Rear shift-Right
Drink-Right
Clip in-Right first
Clip out-Left first
Brakes-Slightly in on Left, then combine with Right (old motorcycle way)
My left hand doesn't work well enough to use for drinking while riding.
My right hand can't hold tools very well. You use what works in each situation.
*Piggy-back Suntours excepted. They are so easy to use without the DT in the way.