If it is sprung both ways, that's fine to mount pretty much any switch position IMO. I have that same switch on SA and it's functioning as my telemetry page toggle fwd/back switch.
If the bias on the UP/DOWN switch is clear, I consider to get one for gears up/gear down/brake (spring). Saves practically one switch for other purposes, for me. I have a standardised (across models) gear switch position so that bias matters.