ATC don't seem to use 22 very often at YMMB. Never heard 22 as the active runway on the ATIS.
It mainly seems to happen when there is a bit of a crosswind on the other runways and maybe ATC think the plane has a limited crosswind component. Guess this applies to a Tiger Moth.
I've only ever been given 22 when landing a Decathlon. Didn't ask for it, but the tower gave me 22.