Can't comment on the "BUS" as being a Boeing 737-800 skipper. I offer all of my F/O's to fly raw data and no autothrottle any time they want.
It instills confidence and continues the learning process of how to fly a hight performance aircraft.
IMHO it the mass evolution of "Microsoft" pilots.
Don't get me wrong... the automatics are great, especially when a bit on the knackered side, but one needs to remember who is in charge of the jet... the pilot or the computers.