I use 20w fork oil in my BSA forks cos thats what they were designed for.
I use ATF in my primary, cos a lot of people say its better for the clutch and from experience that's right - I was advised to use ATF by Len Vale Onslow, and he knew a thing or three about British Bikes.
But then, some people reckon that Triumphs are better than BSAs - I don't agree with them but they are entitled to their opinion.
