Our company's SOP is to use the 100's setting below transition altitude and the 1000's setting when above it for flight levels.
Doesn't seem to be much of a problem - only takes a second to switch it over.
But Capt scribble, are you saying that ALL your selections must use 100's ? If so, that seems a bit weird. Ten times the number of turns to dial in a big climb ? Pointless and stupid, it won't make selections more 'safe, it will add extra errors because you will have to spin that knob so much that it will probably actually reduce precision.