It also works better on languages using free functions than those using method calls e.g. in Haskell you have

    filter :: (a -> Bool) -> [a] -> [a]

so you partially apply to a predicate to get a specific filter condition which you can apply to various contexts e.g.

    over10 = filter (>= 10)

That's why functional languages tend to put the callback first in HoFs, it's usually the more common partial application case.