I make no attempt to turn it off or go to standby while taxiing or
anything else. I've never been asked to go to standby or otherwise
questioned.

Standby gets used only:

a) At OSH, per the NOTAM.

and

b) When flying as a flight of two.

Otherwise, it may as well be soldered "on"...
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"