i see lots of topics about people with new ss freewheel builds claiming they keep a cog on the other side "for when they ride fixed".

does anyone who actually rides a fixed gear switch to the freewheel side? i know of two people who ride a freewheel with a fixed cog on the other side who have never flipped their wheel. this seems to be more representative of the "flip flop hub" demographic.
i also don't know of anyone who rides fixed who would ever ride a singlespeed freewheel "on occasion".

is "for when i ride fixed" a myth?